HENRY SOTHERAN Sc CO., 140, STRAND, W.C, AND 37, PICCADILLY, W 367 



7188 DA VIES (Thomas Stephens, f.r.s. ; editoi- of ' The Mathematician') Tho Early History of 

 the Mariner's Compass, ivith woodcuts, 18ni6. seivn, with inscr. to Dr. P. M. lloget, F.R.S., 

 2s 6d 1837 



7189 DAVIS (George E., formerly AlkcUi Acts Inspector) Handbook of Chemical Engineering, 

 with Working Examples, and numerous Drawings from Actual Installations, 2n(l Edition [en- 

 larged], with 540 ivoodcuts, 2 vols. roy. 8vo. cl., £1. 1* (p. £2. 26) Manchester, 1904 



7190 DAVIS (R. H., Siehe, Gorman cb Co.) DiviNO Scientifically and Practically Considered: 

 a Diving Manual and Handbook of Submarine Appliances, embodying the latest Deep Sea 

 Prac tice adopted by the British Admiralty, etc. etc., with 108 illustrations, 4to. cl., Zs [1909] 



7191 DAVY (Christopher) Architectural Precedents, with Notes and Observations, with 

 numerous plates and plans {some folding), thick 8vo. cl., As 6d 1841 



7192 The Architect, Engineer and Operative Builder's Constructive Manual : 



with the Construction of Artificial Foundations for Buildings, EailwayB, etc. : Part I, with 

 13 plates (one coloured), and woodcuts, 8vo. cl., or, hf. calf, 3s Qd 1839 



7193 New Edition, with \3 plates, besides woodcuts, 8vo. cl., 3s Qd 1841 



7194 DAVY (Sir Humphry, p.r.s.) Collected Works, edited, with Life, by his Brother John, 

 ¥.v..'S,.,with fine steel bust-portrait, numerous plates, andfs. letter, 9 vols. 8vo. cl. [scarce), £1. 17* M 

 (p. £4. 14* Qd) 1839-40 



Contents:— I. Life: II, Early Miscellaneous Papers, ITltO-lSOj : III. Researches concerning Nitrous Oxide, etc. : 

 IV. Elements of Chemical Philosophy: V. Bakerian Lectures: VI. Miscellaneous Papers and Researches, 1S15 '28 : 

 VII. .VIII. Agricultural Lectures : IX. Salmonia ; Consolations in Ti-aveU 



7195 Account of some New Experiments on the Fluoric Compounds, with Observa- 

 tions on other Objects of Chemical Enquiry : Some ExPERi^iENTS and Observations on a 

 New Substance which becomes a Violet Coloured Gas by Heat— 4to. (i)p. 32), sewn, 

 5s 6d 1814 



The second x^aper contains the author's valuable researches on the properties of iodine, discovered only in 1811 by 

 Courtois. Added is : The Bakerian Lecture : on s»mp new Electro-chc niieal Phenomena, by W. T. Brandk, f.r.s. 



719(j _ On the Corrosion of Copper Sheeting by Sea Water, on Methods of Preventing 



this Eftect, and on their Application to Ships of War and other Ships, 4to. (pp. 8), sewn, with 

 author's inscr. [see below), &s 1824 



' Riglit Hon'iie Geo. Knox from his friend the Author.'— //iscr. on title. Containing the author's discovery that the 

 addition of a very small quantity of zinc to the copper is enough to counteract the destructive action of sea water on 

 copper sheathing. 



7197 Elements of Agricultural Chemistry, in Lectures for the Board of Agriculture, 



first edition, with copperplates, 4to. hf. calf gilt, \1s 1813 



With appendix : ' The Results of Experiments on the Produce and Nutritive Qualities of Different Grasses, and other 

 Plants, used as the Food of Animals.' 



7198 Second Edition, with folding copperplates, 8vo. boards, uncut, 7s 6d 1814 



7199 Fragmentary Remains, Literary and Scientific, with Sketch of his Life, and Select 



Correspondence, edited by his Brother John, f.r.s. , 8vo. cl. (.scarce), 8s 6d 1858 



This work is not included in the edition of his ' Collected Works ', and .should be added as a Supplement. 



7200 On a New Phenomenon of Electro-Magnetism, 4to. (pp. 7), sewn, 2s Qd 1823 



7201 On the Relations of Electrical and Chemical Changes, 4to. (pp. 42), sewn, 4s 1826 



7202 Researches, Chemical and Philosophical ; chiefly concerning Nitrous Oxide, or 



Dephlogisticated Nitrous Air, and its Respiration, 8vo. boards, uncut (SCARCE), £1. 1* 1800 



Containing the author's discovery of the annesthetic action of nitrous oxide (laughing gas), discovered by Dr. Priestley 

 In 1770. 



' Davy's 'Researches,' which were full of striking and novel facts, and ricli in chemical discoveries, soon attracted the 

 attention of the scientific worl^.'—Kohert Hunt, F.ll.S. 



THE DAVY LAMP: 



7203 On the Safety Lamp for Coal Miners; with some Researches on Flame, first 



edition, withfolding copperjilate, 8vo. sewn (a few II. slightly stained) ; SCARCE, 15* 1818 



Containing an account of the Davy Lamp, Sir Humphry's best known invention. In the preface he acknowledges his 

 indebtedness to Faraday ' for much able assistance in the prosecution of my experiments.' 



7204 Six Discourses l)efore the Royal Society on the Award of the Royal and Copley 



Medals, with Address on the Progress and Prospects of Science, 4to. old hf. calf (rubbed and 

 craclced), Is Qd 1827 



7205 : Davy (John, m.d., f.r.s.) Memoirs of the Life of Sir Humphry Dayy, with fine 



youthful MEZZOTINT PORTRAIT by C. Turner after H. Howard, R.A., and woodcuts, 2 vols. 8vo. 

 cl., uncut (SCARCE), 17s 6rf 1836 



7206 : Mayhew (Henry, author of ' London Labour and the London Poor') The Wonders of 



Science, or Young Humphry Davy, the Cornish Apothecary's Boy : the Life of a Wonderful 

 Boy, written for Boys, with beautiful plates by SiR JOHN GILBERT, and numerous other woodcuts, 

 thick 12mo. cl., g. e. (scarce), 5s 1862 



7207 : Paris (John Ayrton, M.D., f.r.s.) The Life of Sir Humphry Davy, with portrait by 



Worthington after Sir T. Lawrence, and folding fs., 4to. cl. (cover slightly damaged), 7* Qd 1831 



7208 Another Copy, hf calf gilt, 9* Qd 



With chapter : ' General View of the History of Chemical Science, and of the Revolutions produced in its Doctrines by 

 the Discoveries of Sir H. Davy.' 



The alx)ve and Dr. John Davy's biographies, and that contained in the 'Collected Works', form the chief authorities on 

 Sir Humphry's life. 



7209 DAWSON (Maria) ' NiTBAGiN ' and the NoDULES of LEGUMINOUS Plants, with plate, 4to. 

 (pp. 28), sewn, \s %d 1899 



7210 DAWSON (Philip, m.i.c.e., electrical adviser L. B. d- S. C. E.) The •Engineering* and 

 Electric Traction Pocket Book, with numerous diagrams and other illustrations, 12mo. (pp. 

 1094), limp morocco, g. e., with flap, Qs (p. 12^ 6c? nett) 1899 



2.5 * 



