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Paris, aux dépens des Libraires associés pour les Usages du Diocèse, 1738. 8vo. (170x100x35 mm.). Contemp. full green morocco. Profusely tooled in gold. Large crowned and gilt monogram surrounded by broad gilt dentelles on upper and lower covers. Dentelles with stamps of shells and flovers. Spine likewise richly gilt in 6 compartments. Titlelabel with gilt lettering. Inner gilt borders. Edges of covers gilt. All edges gilt. Pink silk doublures. Upper joint at lower compartment with a tiny crack. In a custom made slipcase, front edges in brown morocco. (2),(22),XL,811 pp.

Darmstadt, C.W.Leske, (1822). 12mo. Orig.blue boards, engraved. Binding intact but hinges weak. Backstrip with tears. Engr.frontisp.(portr.), VI,471 pp. and 34 fine engraved plates (views etc.). - First edition.

Basel, Genethianis, 1676. 8vo. Contemp. full vellum. 2 small nicks to vellum at fronthinge. Engraved title-page and printed title-page. (70),336,(12) pp. The printed titlepage with engraved vignette. 2 full-page engravings (portrait of Erasmus by Holbein and Erasmus' Memorial Stone). With 78 textengravings by Hans Holbein (engraved by Casper Merian), some of which are tipped in and folded, some printed in the text. Lacks the 2 portraits of Holbein the Elder and Holbein the Younger. Some leaves in the middle with faint browning in lower part. 2 of the tipped-in engravings with a bit of repair. Printed on good paper. These are the most famous illustrations of The Praise of Folly.First edition of "ThePraise of Folly" with Hans Holbein's illustrations. The work is considered one of the most notable works of the Renaissance and played an important role in the beginnings of the Protestant Reformation. Its role stem from the foundation of critique which the essay laid against the practices of the Church and its political allies.Graesse II:495. - Brunet II:1037.

Venetia, Fabio & Agostin Zoppini Fratelli & Onofrio Farri, (1590). 4to. Contemp. full vellum. Marbled edges. Printers woodcut-device on title-page. (8),544,(90) pp., Many large initial in woodcut, 10 large woodcut illustrations in the text (3/4-page), woodcut portrait on verso of fol.4. A few faint brownspots. Clean and fine. Brunet I,1002. - Not in Adams.

Kjøbenhavn, 1815. Rent og velholdt eksemplar på velin, ubeskåret og bevaret i samtidige blanke omslag. Eksemplaret er indlagt i en smuk, nyere papirkassette udført af Hove, fuldstændigt overtrukket med papir. Bogen har tilhørt Bent W. Dahlstrøm og indeholder en egenhændig dedikation fra forfatteren: "Til Fröken Ida Brun fra hendes gamle Anakreon." Eksemplaret blev mageskiftet med Vagn Clausen i september 1973. 28, (4) pp. Da Jens Baggesen vendte tilbage til Danmark i 1811, blev Ida Brun, datter af Friedrike Brun, en muse for den aldrende digter. Baggesen skrev flere digte til hende, herunder 'Den gamle Anakreon til den unge Psycarion', som oprindeligt var skrevet til Sophie Ørsted, Adam Oehlenschlägers søster. Dette digt blev første gang offentliggjort i 'Foersoms poetiske Lommebog' i 1813 (s. 251) og senere i 'Poetiske Epistler' i 1814 (s. 347). I 1815 flyttede Baggesen fra Raus Hotel på Kongens Nytorv til Kronprinsessegade 16, en ejendom med matrikelnummer 390. Både gadenavnet og matrikelnummeret har givet digteren inspiration til dette digt. I digtet gæster de tre gratier og de ni muser Baggesens hjem for Kronprinsessens skyld, da hun på den nævnte dag fejrede fødselsdag sammen med sin moder, dronningen. Drømmen tilegnes dronningen, mens det efterfølgende digt Den opstandne Sang er dedikeret til Kronprinsesse Caroline. Se Albertsen: Immanuel, planche XIII. Plesner 147; Bibl. Danica IV, 212.

Frankfurt am Mayn, Johann Gottlieb Garbe, 1779. Contemp. hcalf. Raised bands, ricly gilt spine, titlelabel with gilt lettering. Stamps on title-page. (20),528,(24) pp. and 4 large folded engraved plates with 16 illustrations. Clean and fine. First edition.

Leipzig, Gross & Fritsch, 1701. 4to. Contemporary full vellum. Handwritten title on spine. A small stamp to title page and page . Pasted library label to pasted down front free end-paper. In: "Nova Actorum Eruditorum Anno MDCCI". Pp 213-228 + 1 engraved plate. [Entire volume: (2), 581 pp. + 8 engraved plates]. First publication of Jacob Bernoulli influential dissertation in which he published the first correct solution to the isoperimetric problem both Johann Bernoulli and Leibniz had been seeking without success. The paper influenced both Leonhard Euler in writing his first research paper and British mathematician Brook Taylor to begin a dispute which has later been referred to as Taylor versus Continental mathematicians. "It [the dissertation] was considered as a prodigy of sagacity and invention: and indeed, if the time be considered, it will not be too much to assert, that a more difficult problem never was solved." (Bossut. A general history of mathematics. 341 p.).The isoperimetric problem is an ancient problem which dates back to antiquity and can be described as which curve, if any, maximizes or minimizes the area of its enclosed region?Euler, who had been taught by Johann Bernoulli, published his first paper in 1726 which was a note on the construction of isochronous curves in a resistant medium.DSB II, 48b.The following papers by Johann Bernoulli are also contained in the present volume:1. Disquisitio Catoptrico-Dioptrica exhibens Reflexionis et Refractionis naturam ex aequilibrii fundamento deductam. Pp 19-26.2. Novaratio construendi radios osculi seu curvanturae in Curvis quibusvis etc. Pp. 136-40.3. Multisectio Anguli vel Arcus, duplici aequatione universali exhibita. Pp. 170-75.

.London, Printed by Taylor and Francis - Published by the Author, (1862-) 73. Folio. Papersize 54,5x36,5 cm. Lithographed and fully handcoloured. Two birds, female and male in natural surroundings, one on the nest, flowering plants, a butterfly. J. Gould & H.C. Richter, del. et lith. - Walter, Imp. Fine and clean. The plate is accompanied with the original textleaf. (2) pp. This is an original plate from Goulds great work "The Birds of Great Britain", issued between 1862 and 1873. The plates in this work were executed by Gould himself, and a few by J. Wolf, H.C. Richer and Hart. Together with Audubon's plates, the Gould-plates are considered the best bird-art ever produced, AND THE PLATES IN HIS "BIRDS OF GREAT BRITAIN" ARE THE PEAK OF GOULD'S ARTISTIC LIFE. In the foreword Gould stresses the difference from his "Birds of Europe" in the treatment of the illustrations, the inclusion here of the figures of the baby birds and nests, and he comments "Many of the public are quite unaware how the colouring of these large plates is accomplished; and not a few believe that they are produced by some mechanical process or by chromo-lithography. This, however is not the case; every sky with its varied tints and every feather of each bird were coloured by hand; and when it is considered that nearly two hundred and eighty thousand illustrations in the present work have been so treated, it will most likely cause some astonishment to those who give the subject a thought.". Elsewhere he remarked upon employing "almost all colourists in London." - Wood p. 364. - Nissen No. 372. - Sitwell 102. - Zimmer pp. 261-62. - Not in Jean Anker.

(London, Richard and John E. Taylor, 1839). 4to. Without wrappers. Extracted from "Philosophical Transactions of the Royal Society of London.", 1839, Part I. Pp. 39-81 and 2 plates. (1 engraved map and 1 lithographed plate). Both plates with a few brownspots. First appearance of Darwin's investigations of the geological phenomenon of the so-called "Parallel Roads" in Scotland."The first published description of the Parallel Roads was by Thomas Pennant in 1771 in his book A Tour of Scotland. This work was far from scientific but during the 19th century Glen Roy played an important role in the development of geological and geomophological theories of landscape evolution.1 Initially the 'Roads' were believed to be lake or marine shorelines. How they were formed in an area that was now high above the sea and without signs of a closed lake bed was a mystery. Initially it was thought that the shorelines were of marine origin and formed during a period when the sea reached levels of the Parallel Roads. Among the proponent of this theory were both Charles Darwin and Charles Lyell.2 It was in particular Darwin who was impressed by the geology of Glen Roy. In 1838 he wrote to Lyell, "I wandered the mountains in All directions and examined that most extraordinary district. I think without any exceptions, not even the first volcanic island, the first elevated beach, or the passage of the Cordillera, as so interesting to me as this week. It is far the most remarkable area I ever examined. ... I can assure you Glen Roy has astonished me".3 Darwin and Lyell proved to be wrong in this matter." (Jan Oosthoek). Freeman 1653.

(Paris, Ca. 1860). Folio. (46,5 x 31 cm.). Contemp. hcloth. Spine ends strenghtened. Each part with separate title-page and numbering. Ca. 250 pp. Some part with scattered brownspots. First edition. Listing a huge amount of nautical and hydrographical maps from all over the world.

Paris, Crochard, 1816. 8vo. In contemporary half calf. Spine with gilt lettering. In: "Annales de Chimie et de Physique, Par MM. Gay-Lussac et Arago." Sweries 2, tome 3. (Entire volume offered). 448 pp. and 3 engraved plates. Library stamps to verso of title-page and verso of plates. Fourier's paper: pp. 350-375. A few scattered brownspots. First appearance in print of any part of Fourier's landmark work "Théorie Analytique de la Chaleur" which was published in 1822. The 2 large memoirs (of 1811) out of which - together with the offered memoir - grew his landmark work were only published in 1824 and 1826. The volume contains also original papers by LAPLACE, GAY-LUSSAC, MAGENDIE, PRONY, HUMBOLDT, BIOT etc.etc. "In 1816 Fourier published a paper (the paper offered) announcing the imminent appearance of a book on both the mathematical and the physical aspects of heat (Fourie 1816); but six years were to pass before a book was published, and it covered only the mathematical sides. In the 'preliminary discourse' he stated that its writing and printing had taken a long time (p. xvii)." (Grattan-Guiness "Landmark Writings in Western Mathematics 1640-1940", p.356).

A Paris, chez le Sr Desnos, 1783. 46x64 cm. Engraved map of South America, contemporary handcoloured. The 2 large cartouches uncoloured. Right margin shaved, small tear showing into scale, of which a small part lost (1x1 cm.). Jaillots impressive map of South America from 1681 in Brion de la Tour's revision from 1783.

London, Richard Taylor, 1834-35. 4to. No wrappers as extracted from "Philosophical Transactions", 1835 - Part I. Titlepages to the volume present. (2),95-144. Both papers clean and fine. First appearance of this groundbreaking paper in which Hamilton develops the whole of theoretical dynamics by the aid of one function only, his 'Characteristic' or 'Principal' Function. He applies his method to a case of planetary motion, using a system of canonical elements" (Introduction, The Mathematical Paper of Sir William Rowan Hamilton, xiii). Hamilton then argues that the "tool of the characteristic function could also be applied to reformulate the fundamental laws of dynamics; thus the actual motion of mass point in a field of forces, e.g., is found to be governed by equations that are the analogues of those determining the propagation of the rays of light. Hamilton's optical-mechanical analogy, not only provided a new and more powerful formulation of classical mechanics but also, came to form the foundation of the Schrödinger scheme of quantum mechanics, e.g., wave mechanics. " (Mehra The Historical Development of Quantum Theory)

La Haye, Jean van Duren, 1741. Bound in 2 contemp. full calf. Raised bands. Richly gilt spines. Tome- and titlelabels with gilt lettering. Blindtooled borders on covers. A paperlabel pasted on spines. Light wear to top of spine on part 1. Stamp on title-pages. Title-pages in red and black with engraved vignette. Engraved frontispiece. XXXII,164;(2),VIII,(8),143,(1);(2),158 pp., 40 large folded engraved plates. Clean and fine on good paper. First edition.

Lyon, Chouet, 1607. 4to. In contenmporary full vellum. Binding with wear, soiling and miscolouring. Back board with wormholes and corner and and head and foot of spine with loss of vellum. Title-page with light soiling and previous owner's name in contemporary hand. Small dampstain to upper margin, but internally generally nice and clean. (16), 1172, (22) pp. Rare first edition of Favre’s commentary on Roman jurist Papinian, one of the founding jurists at the school of law at Beirut in the second century. Here Favre attempts to present and analyse all the rules of Roman laws in a scientific and systematic way.

Paris, Gide et J. Baudry, 1854-62. Bound in 17 uniform contemp. hcalf. Spines gilt and with gilt lettering. A paperlabel pasted to lower compartment. A few scratches and light wear to some edges. Upper compartment on last volume defective with a nick in leather. With Arago's engraved portrait in last volume. Some scattered brownspots, but in general clean and fine. First edition.

(Kiøbenhaffn, Hans Stockelmann og Andreas Gutterwitz, (Baltzer Kausis Bekaastning)), Kolophon, 1574). Lille 8vo. Senere hldrbd. i gl. stil med ophøjede bind på ryggen. Rygfelter med blindtrykt stempel, forgyld titel. Med 153 (af 168) blade. Mangler bladene I-XII, XIIIa,XV,XVI. Lidt spredte brunpletter og lettere brugsspor. Eksemplaret har tilhørt Jonas Skougaard og har hans kollationering på bagerste friblad. Hans biblioteksnummer tilskrevet 9214. Skougaard anfører, at der kendes 7 komplette og 3 defekte eksemplarer, hvoraf der i Norge er 2 komplette og 1 defekt. Dette er tredie optryk af ordinansen - det første udkom 1553 - af den reviderede og endelige udgave af Danmark og Norges reformations-ordinans fra 1542. Den var gældende i Norge op til 1607 hvor Norge fik sin egen.Laur. Nielsen, 1218. - Thesaurus, 72.

Copenhagen, 1856. 8vo. Bound with the original blank glitted front wrapper in contemporary boards with cloth back-strip. Stamp to title-page. A bit of overall wear and minor brown-spotting. 15 pp. Rare first edition, presentation-copy, of colding's highly interesting first work on the philosophical and religious aspects of his discovery of the principle of conservation of energy, which is of importance for his discussions of joule's experiments and for his priority dispute with mayer, independently of and simultaneusly with both of whom he discovered the principle of conservation of energy. Presentation inscription from the author ("Hr. Generalmajor v. Schlegel / ærbødigt fra A. Colding") [i. e. "Mr. General Major v. Schlegel / Yours faithfully A. Colding"] to verso of the original front wrapper.Ludvig August Colding (1815 - 1888) was a famous Danish engineer and physicist. He was originally educated as a carpenter but graduated as mechanical engineer in 1841. In 1845 he became water-inspector in Copenhagen and in 1847 he was also given the responsibility of the gas- and waterworks. Together with the famous chemist Julius Thomsen, he proved that the cholera spread throughout Copenhagen through the drinking water (1853) - a most significant discovery. After this he was responsible for replacing much of the sewer-system of Copenhagen. In 1857 he became state engineer. During this period he overhauled the desperately inadequate water and sanitation system. He articulated the principle of conservation of energy contemporaneously with, and independently of, James Prescott Joule and Julius Robert von Mayer though his contribution was largely overlooked and neglected."The Philosophical and religious side of Colding's thesis was first elaborated in his cumbersome treatise of 1856, "Naturvidenskabelige Betragtninger over Slaegtskabet mellem det aandelige Livs Virksomheder og de almindelige Naturkraefter" ("Scientific Reflections on the Relationship between the Intellectual Life's Activity and the General Forces of Nature"), his last paper on this topic to the Danish Society of Sciences; it was published on the occasion of his being elected member of the Society. It stressed his own philosophical conviction and dwelt at length on the relationship between the material and the spiritual in nature, clearly echoing the intellectual and aesthetic influence of Oersted and in a tone reminiscent of Kant and Schelling. This paper is also of interest for Colding's discussions of Joule's experiments, with which he was acquainted by then, and for his passionate priority dispute with Mayer." (Dictionary of Scientific Biography, 15 & 16, s. 86)

Franckfurt & Leipzig, 1771. 4to. In contemporary half calf with five raised bands and richly gilt spine. Corner bumped and boards with a few scratches. Internally very nice and clean. 152, (2), 100, (2), 76, (2), 82, (2), 82 pp. + 2 hand coloured folded maps, 7 portraits and 1 folded plate. First German translation, part 1 to 6 only, of Carminer’s richly illustrated extensive work on the Russo-Turkish War of 1768 to 1774, with detailed accounts of the prehistory and course of the war, peace efforts, domestic political conditions, description of the Turkish state and its armed forces, and much more. The engravings include portraits of Mustafa III, Halil Pasha, Admiral Spiridov, Peter III, the Dardanelles Strait, among others. The work was first published in Venice in 1770 under the following title “Storia della guerra presente tra la Russia e la Porta Ottomana”.

München, Piper & Co, (1958). Lex 8vo. Original blue full cloth binding with original dust-jacket in red and black with white and grey lettering. Dust-jacket with nicks and tears to extremities. A few underlinings to the first leaves. With the bookplate of the famous American educator Paul Arthur Schilpp. 506, (6, -advertisements). Inscribed by the author to front free end-paper: "Herrn College Schilpp/ in alter Dankbarkeit/ Karl Jaspers". And with the inscription "Basel, den 7. August 1958" underneath. First edition, presentation-copy, of Jasper's main work in political philosophy, "The Atom Bomb and the Future of Man", in which Jaspers outlines his humanist doctrine. It is in this work that we find most explicitly expressed his ideas on the importance of the social and collective conditions of human integrity. The work became greatly influential. The German philosopher and psychiatrist Karl Theodor Jaspers (1883-1969) was one of the main exponents of existentialism in Germany and he had an enormous impact on theology, psychiatry and philosophy of his time. Later on, his works in political philosophy came to exersize an even greater influence upon 20th century thought. "Karl Jaspers (1883 - 1969) began his academic career working as a psychiatrist and, after a period of transition, he converted to philosophy in the early 1920s. Throughout the middle decades of the twentieth century he exercised considerable influence on a number of areas of philosophical inquiry: especially on epistemology, the philosophy of religion, and political theory. His philosophy has its foundation in a subjective-experiential transformation of Kantian philosophy, which reconstructs Kantian transcendentalism as a doctrine of particular experience and spontaneous freedom, and emphasizes the constitutive importance of lived existence for authentic knowledge. Jaspers obtained his widest influence, not through his philosophy, but through his writings on governmental conditions in Germany, and after the collapse of National Socialist regime he emerged as a powerful spokesperson for moral-democratic education and reorientation in the Federal Republic of Germany." (SEP).Paul Arthur Schilpp (1897 - 1993) was famous an American educator. He was born in Germany and immigrated to the United States prior to World War I. Schilpp taught at Northwestern University, University of the Pacific and spent the last years of his professional career teaching undergraduate philosophy courses at Southern Illinois University at Carbondale. He was considered a serious and driven teacher of moral decision and thought, often controversial. He was known for his passionate teaching methods and highly energetic delivery. For many years he was the editor of the Library of Living Philosophers. As editor he was able to convince people like Albert Einstein to contribute to the library.

Berlin, G. Eichler, 1836. In "Archiv für Anatomie, Physiologie und Wissenschaftliches Medicin Herausgegeben von Johannes Müller". Jahrgang 1836. Pp. 66-89 a. pp. 90-139. The entire volume offered in its 6 parts (in 5), all 5 issues uncut with orig. printed warppers. (2),CCXXIV,390 pp. and 15 engraved plates. The 2 first issues with a faint dampstain to lower part of leaves and plates. First appearance of an importent paper in the history of biology, in which Schwann describes his discovery and isolation of pepsin, the substance in the stomach that aids digestion of eggwhite. It is the FIRST KNOWN ANIMAL ENZYME. The paper appeared at the same time in "Annalen der Physik und Chemie. Hrsg. von J.C. Poggendorff".Theodor Schwann (1810-1882) was a great German physiologist, pathologist, and experimenter. One of the founders of the cell doctrine and of the idea of the living nature of yeast. Born at Neuss, near Düsseldorff. A catholic, educated in the Jesuit Gymnasium in Cologne. Intended for the church but took to medicine. He was a pupil of Johannes Müller and a collegueand lifelong friend of J. Henle, the anatomist. In Berlin Schwann was Johannes Müller's assistent for five years, and it was then that he discovered pepsin in 1836 (the paper offered).Parkinson "Breakthroughs" 1836 B. - Garrison & Morton no. 991.The first paper offered, written together with Johannes Müller records the preliminary investigaions leading to the discovery of Pepsin. - Garrison & Morton no. 990.The volume also contains another famous paper by ROBERT REMAK "Vorläufige Mittheilung microscopischer Beobachtungen über den innern Bau der Cerebrospinalnerven und über die Entwicklung ihrer Formenelemente. (Hierzu Tafel IV). Pp. 145-161. This paper contains the first announcement of his DISCOVERY OF "FIBRES OF REMAK", the non-medullated nerve-fibres. (Garrison & Morton no. 1260.

London, Richard taylor and William Francis, 1853-54. 4to. No wrappers as extracted from "Philosophical Transactions" 1853, Vol. 143 and 1854, Vol. 144. With titlepages to vol. 143 a. 144. The papers: pp. 357-365 a. pp. 321-364, textillustrations. The first titlepage bears the name of P.G. Tait. First printing of these importent papers in which the authors found the so-called Joule-Thomson effect which should be the founding technology in refrigeration. They showed that a gas expanding into vacuum without addition of external work undergo a change in temperature, in spite of the theoretical speculations. The temperature change occurs due to the internal work required to overcome the attractive forces between molecules."The only substantial contribution to thermodnamics to which the joint names of Joule and Thomson, are attached belongs to an idea conceived by Thomson, who saw the possibility of analyzing the deviations of gas properties from the ideal behavior. In particular, a non-ideal gas, made to expand slowly through a porous plug (so as to approximate a specified mathematical condition—constant enthalpy), would in general undergo a cooling (essentially a transformation of atomic motion into work spent against the interatomic attractions). For the delicate test of this effect Thomson required Joule’s unsurpassed skill (1852). But the application of the Joule- Thomson effect to the technology of refrigeration belongs to a later stage in the development of thermodynamics."(DSB).Peter Guthrie Tait (1831 - 1901) was a Scottish mathematical physicist, best known for the seminal energy physics textbook Treatise on Natural Philosophy, which he co-wrote with Kelvin, and his early investigations into knot theory, which contributed to the eventual formation of topology as a mathematical discipline. His name is known in graph theory mainly for Tait's conjecture. (His name on the first titlepage).Parkinson "Breakthroughs" 1852 C.

(City of the Regent (St. Petersburg), November 7303 (= 1795)). 4to. Contemp. full calf over wood, remains of clasps. The covers bent. A crack in the wood and leather on the backcover. 82 leaves (164 pp). Printed on thick paper, internally clean. A small nick to margin on the first leaf. First edition of Catherine's Church Ritual for the Old Believers.

Paris, Edme Couterot, 1683. 12mo (160 x 100 mm). In contemporary full calf with five raised bands and richly gilt spine. Small paper label pasted on to top of spine (indicating the inventory number in a estate library). A fine copy. (blank), (34), 469, (18), (blank) pp. Rare first appearance of Mouette’s account of Morocco and Fez in particular based on his observations during his eleven years of captivity in Morocco. Mouette is regarded as being one of the few chroniclers of Moroccan captivity. Germain Mouette, also known as Sieur Mouette, faced misfortune during his journey to the French colonies in the Americas. While aboard the warship La Royale in October 1670, he encountered the corsairs of Salé and became a captive of Moroccan pirates. Following his capture, Sieur Mouette, like other foreign captives, was transported to Salé, often characterized as the "pirate capital of Morocco" Throughout his eleven-year sojourn in Morocco, Mouette meticulously documented and remembered his experiences. Initially sold into captivity in Salé, where he toiled alongside fellow slaves in the renovation of the city walls, he was eventually sent to Fes. "It may nevertheless be objecte, that being a captive or slave, he had not leisure to see and inform himself as travelers do : But a man, that has anything of curiosity, though in the depth of misery, never fails to observe what is remarkable", Mouette wrote.

Güstrow (Rostock), Johan Hallervords, 1635. Small 8vo. Later, modest clothbacked marbled boards. (24),255 pp. One leaf torn in lower margin, no loss of text. Very light browning and a few scattered brownspots. Scarce second edition (the first 1630) of an importent work on the borderline of chemistry and medicine. Osler states that he "was one of the founders of modern chemistry"."Sala (following Paracelsus) defined the Spagyric Art as that part of chemistry which has for its subject the natural bodies, vegetable, animal, and mineral, and such operations as tend to the end of rendering them useful in medicine.... its principal operations are separation, subtilisation, and sublimation." (Partington)."He was an able physician and an excellent chemist, an admirer and to some extent a follower of Paracelsus, an advocate of chemical remedies, an opponent of quackery, and he was able to judge fairly the merits both of the chemical and Galenic systems of medicine then in conflict. Concring calls him the first of the chemists who was free from triffling;... (Ferguson)."Considering his work as a whole, it is evident that Sala was above all a practitioner. In his view, demonstrations could be carried out only through manual operations (inventionibus manualibus), that is to say, only with the aid of experimental examples, which he clearly distinguished from argumentation. For him, chemistry was still a handicraft (ars)."(DSB).Ferguson II, p. 314. - Partington II, p. 277. - Not in Duveen - Not in Neville.