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(Berlin, Haude et Spener, 1750). 4to. No wrappers, as issued in "Mémoires de l'Academie Royale des Sciences et Belles-Lettres", 1748, tome IV, Titlepage to the volume in red/black with engraved titlevignette a. pp. 356-364. A stamp on titlepage.c First printing of this memoir. In various connections Bernoulli used the principle of the coservation of 'Vis Viva' within the main areas of mechanics. "Similarly, in an essay (1747) on the motion of a heavenly body and the three-body problem he worked out from the first integral of Newton’s second law, which related the square of its velocity to, in effect, its level of potential under attraction. In a sequel study (1750, the paper offered) on the generality of the principle he included the case where the body was acted upon by more than one centre of force. This was a most unusual way of working within celestial mechanics; Newton had rarely invoked energy equations or relationships, although he had also found results about external attraction and equipotential surfaces."(I. Grattan-Guiness).

Leipzig, C.E. Kollmann, 1841. Contemp. hcalf. Gilt spine with light wear. VIII,782 pp. First German edition. Elliotson was one of the first to perform surgical operations with the aid of hypnotism. He was a great friend of Dickens and Thackerey, but his views on hypnotism were bitterly opposed by Thomas Wakley, editor of the Lancet, whose onslaught eventually lead to his downfall.(Bibliothek von Vorlesungen..redigirt von Friedrich J. Behrend, XVI).

Slagelse, Peter Magnus, (1820). Lille 8vo. Lidt senere hshirtbd. med marmorerede permer. Håndskrevet titeletiket på forpermen. Lille stempel på titelbladet. IX,(2),180 pp. Indvendig ren. Originaludgaven.

Odense, 1826. 4to. Lidt senere velbevaret hldrbd. (8),130,(1) pp.

Mainz, C.G. Kunze, 1850. Small 8vo. Contemp. hcalf, spine gilt. A paperlabel pasted on spine. Stamps on titlepage. II,218 pp. and 23 lithographed plates with 203 figs. The first three leaves somewhat bownspotted. A few scattered brownspots.

Biponti (Zweibrücken), Typographia Societatis, 1788. 8vo. 2 contemp. full calf. Richly gilt spines with title-and tomelabels. Some scratches to covers. 2 engraved titlevignettes. XIV,381;(2),343 pp. + Indexes. 2 folded engraved plates. Internally clean. Dibdin II:221 "Destitute of Notes; but with a very correct text. The Notitia Literaria prefixed is also very useful."

Berlin, Morawe & Scheffelt, 1912. Lex8vo. Bound uncut in cont. hcalf, gilt lettering on back. XII,224,(1) pp. Engraved title and 14 engraved plates (on yellow vellum-like paper after the original lithographed plates from the first edition of 1838). A fine, clean and uncut copy.

Paris, Victor Masson, 1856. No wrappers. Extracted from: "Annales de Chimie et de Physique", 3e Series - Tome 47. Pp. 5-50. Textillustr. With titlepage to vol. 47. Some scattered brownspots. First appearance of Fremy's importent paper on the isolation of fluorine, a historic paper in electro-chemistry. The existence of the element fluorine had been well known for many years (since 1813, Davy), but all attempts to isolate it had failed and some experimenters had died in the attempt."The history of fluorine is a tragic record. Marggraf described hydrofluoric acid in 1768, and Scheele studied it three years later. Lavoisier..., thought that all acids contain oxygen, but Davy showed that this one does not. Ampere suggested to Davy that hydrofluoric acid must be composed of hydrogen and an unknown element. Poul Schutzenberger expressed the belief that this unknown substance, fluorine, would be found to be the most active of all elements, and correctly predicted some of its properties. Ti is this extreme activity of the element that made its liberation such a difficult and dangerous task and brought agony and death to some of the pioneer investigators."(Weeks p. 266-67). "An important step was made by Frémy, Moissan’s first mentor, when he succeeded in preparing pure, anhydrous HF and also KHF2, so-called Frémy’s salt, expressed "KFl.HFl" using the notations of that time. Frémy had come very close to finding the solution by electrolysing anhydrous HF, molten calcium fluoride or potassium fluoride, but he seemed not to have had the idea of replacing these compounds by KHF2, perhaps because of the high melting point of the compound, TF = 293°C, which would have led to insurmountable technical difficulties." Weeks "Discovery of teh Elements", p. 266 ff.

Odense, 1979-88. 4to. 10 originale helshirtsbind med smudsomslag samt 1 kassette med kort.

Amsterdam, De la Societé de Marche, 1738. 8vo. In a contemporary Cambridge-style mirror binding with five raised bands and richly gilt spine. All edges coloured in red. Old paper-label pasted on to top of spine. A few scratches to boards, with some loss of leather. Internally nice and clean. (16), 192, 77 pp.

Fayard, 1992. 8vo. Seven full cloth bindings, housed in a matching slipcase. Very fine and clean.

Monasterii Westphaliae, 1824. Small 8vo. Bound in 3 fine recent hcalf. XXIV,(8),958,832,624 pp.

Kbh., 1740. 4to. Ét lidt senere (ca. 1800) hldrbd. m. rygforgyldn. Bd m. en smule brugsspor. False forstærkede indvendig. Rent ekspl, dog lidt tæt beskåret. Uden titelbl. til 2. Tome. (16), 368, 368, (39) pp. Anden udgave.

Leipzig, Johann Ambrosius Barth, 1889. Without wrappers as issued in "Annalen der Physik und Chemie. Hrsg. von G. Wiedemann.", Neue Folge Bd. 36, 1. Heft. Pp.1-272 a. 2 folded plates. (Entire issue offered). Hertz's paper: pp. 1-22. The first leaves loose. First appearance of an importent paper as it is a continuation of his groundbreaking paper "Ueber sehr schnelle electrische Schwingungen", 1887.

Kjøbenhavn, C. A. Reitzel, 1835. Originale blå omslag. Helt guldsnit. I den ekstremt sjældne originale (?) kassette udformet some en mappe, af mønsterpræget brunt pap, med forgyldte stregdekorationer og forgyldt titel. Et særdeles friskt, nydeligt og kuriøst eksemplar, trykt på velin. Originaludgaven af Holst og kuriøst trykte "Portefeuillen", med sit "omvendte" titelblad, her i et udstyr, vi aldrig har set mage til og med egenhændig dedikation fra Holst til den danske skolemand Chr. Agerskou.Dedikationen på forsatsbladet lyder: "Herr Chr. Agerskou / med / Venskab og Hengivenhed / fra / Forfatteren."

Kbhvn., 1827. Orig.hollanderet bind. Ubeskåret. Frisk eksemplar. (8),342 pp. samt 3 stukne foldeplancher. - Første danske lærebog i mineralogi/geologi.

Kbhvn., 1875. Folio. Orig.hldrbd. m. bogtrykte permer. (8),34 pp. samt 23 litograferede tavler (delvis i farve), 5 tekstillustr.

Paris, P. Dupont, 1857. Contemp. hcloth. Spine with gilt lettering. Stamp on title-page. 208 pp., 5 folded lithographed maps and plates. Clean and fine. Offprint "Extrait des Annales Hydrographiques, 2e Semestre 1857".

Leipzig, J.C. Hinrichs, 1809. 8vo. Uncut in orig. blue blank boards. Stamp on titlepage. XII,220 pp (Register incorrectly bound), 12 large folded engraved plates. Some scattered brownspots.

Dressden & Leipzig, Hübner, 1739. 8vo. In contemporary half calf with four raised bands. Small paper-label pasted on to upper part of spine. Boards with wormholes. Small worm-tract to lower margin of first 80 ff., otherwise internally nice and clean. (14), 472, (40) pp. Fifth edition of this interesting work on the psychology and theology of anxiety and fear of death.

Dordraci, 1840. Orig.printed boards. Backstrip lacks. XVI,287 pp. a. 1 engr.fold.plate. Uncut on good paper.

Berlin, Unger, 1786. 2 contemp. hcalf. Spines rubbed. Small paperlabels taped to lower part of spines. Stamp on title-pages. 338;208 pp., 4 tables, 10 large folded engraved maps/plans. A few faint scattered brownspots. Rumpf, 782.

(London, Harrison and Sons, 1879). 4to. No wrappers as extracted from "Philosophical Transactions" 1879 - Vol. 170 - Part I. Pp. 87-134, textillustrations. Clean and fine. This paper, recording a series of further experiments with "The Crook Tube" and "the lines of pressure" under radiation, is an importent paper in the history of vacuum physics.Sir William Crookes (1832-1919) studied at the Royal College of Chemistry , London, and served there as an assistant to Hoffmann. In 1859 he founded the Chemical News and remained its proprietor and editor until his death. He early attracted attention by his discovery of the element thallium by spectroscopic methods. He was an active investigator in many fields of physics and contributed greatly to the advance of knowledge by his study of the radiometer and of the electric discharge in rarefied gases.

Paris, Buisson, 1791. Bound in 2 nice contemp. hcalf. Richly gilt spines, title-and tomelabels with gilt lettering. (4),LVI,539;(4),408 pp. A fine copy on good paper. First edition. The second volume deals with United States. - Sabin, 38500.

Kjøbenhavn, Jacob Preuss, 1741. 4to. Beskedent samt hldrbd. over træ. Ryg slidt. Titeblad i sort/rød. (50),348,(4) pp. Her og der gulplettet. Originaludgaven. En lovprisning af det nye Christiansborg af barokdigteren.