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



7188 DA VIES (Thomas Stephens, F.R.S. ; editor of ' The Mathematician') The EARLY HISTORY of 

 the MARINER'S COMPASS, with woodcuts, 18mo. sewn, with inscr. to Dr. P. M. Roget, F.R.S. , 

 2s Qd 1837 



7189 DAVIS (George E., formerly Alkali Acts Inspector] HANDBOOK of CHEMICAL ENGINEERING, 

 with Working Examples, and numerous Drawings from Actual Installations, 2nd Edition [en- 

 larged], with 540 woodcuts, 2 vols. roy. 8vo. cl., 1. 1* (p. 2. 2s) Manchester, 1904 



7190 DAVIS (B. H., Siebe, Gorman & Co.) DIVING SCIENTIFICALLY and PRACTICALLY CONSIDERED: 

 a Diving Manual and Handbook of SUBMARINE APPLIANCES, embodying the latest Deep Sea 

 Practice adopted by the British Admiralty, etc. etc., with 108 illustrations, 4to. cl., 3s [1909] 



7191 DAVY (Christopher) ARCHITECTURAL PRECEDENTS, with Notes and Observations, with 

 numerous plates and plans (some folding), thick 8vo. cl., 4s Qd 1841 



7192- -The ARCHITECT, ENGINEER and OPERATIVE BUILDER'S CONSTRUCTIVE MANUAL: 



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



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



- NEW EDITION, with 13 plates, besides woodcuts, 8vo. cl., 3s Qd 1841 



7194 DAVY (Sir Humphry, P.R.S.) COLLECTED WORKS, edited, with LIFE, by his Brother JOHN, 

 F.R.S. , with fine steel bust-portrait, numerous plates, andfs. letter, 9 vols. 8vo. cl. (scarce), 1. 17s Qd 

 (p. 4. 145 Qd) 1839-40 



CONTENTS : I. Life : II. Early Miscellaneous Papers, 1709-1805 : III. Researches concerning Nitrous Oxide, etc. : 

 IV. Elements of Chemical Philosophy: V. Bakerian Lectures: VI. Miscellaneous Papers and Researches, 181528: 

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



7193 ACCOUNT of some NEW EXPERIMENTS on the FLUORIC COMPOUNDS, with Observa- 

 tions on other Objects of Chemical Enquiry : SOME EXPERIMENTS and OBSERVATIONS on a 

 NEW SUBSTANCE which becomes a VIOLET COLOURED GAS by HEAT 4to. (pp. 32), seivn, 

 5s Gd 1814 



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

 Courtois. Added is : The Bakerian Lecture : on seme new Electro-chemical Phenomena, by W. T. BRANDE, F.R.S. 



7190 _ On the CORROSION of COPPER SHEETING by SEA WATER, on Methods of Preventing 



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

 author's inscr. (see below), Qs 1824 



' Right Hon l> ie Geo. Knox from his friend the Author.' Inscr. 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, 12s 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.' 



SECOND EDITION, with folding copperplates, 8vo. boards, uncut, 7s Qd 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), Ss Qd 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. Is 1800 



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

 In 1776. 



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

 attention of the scientific world.' Robert Hunt, F.R.S. 



THE DAVY LAMP : 



7203 On the SAFETY LAMP for COAL MINERS; with some RESEARCHES on FLAME, first 



edition, with folding copperplate, 8vo. sewn (a few II. slightly stained) ; SCARCE, 15s 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 before 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 

 cracked), Is Qd 1827 



7205 - : DAVY (John, M.D., F.R.S.) MEMOIRS of the LIFE of SIR HUMPHRY DAVY, with fine 

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

 'cl., uncut (SCARCE), 17s Qd 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), 7s Qd 1831 



7208 ANOTHER COPY, hf. calf gilt, 9s 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 above 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) ' NITRAGIN ' and the NODULES of LEGUMINOUS PLANTS, with plate, 4to. 

 (pp. 28), sewn, Is Qd 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 flop, 6s (p. 12s Qd nett) 1899 



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