122 



DAV 



Davies (D. C). A Treatise on Slate and Slate-quarrying : Scientific, 

 Practical, and Commercial. 8vo. London, 1878, 



■ -. A Treatise on Metalliferous Minerals and Mining. 



8vo. London, 1880. 



Davies (J. Hamilton). See Smith (J. Pye). 



Davies (B^ichard). Tables of Specific G-ravities extracted from various 



authors, with E-emarks upon the same. (Tract.) 4to. London, 1750. 

 Davies (T. S.). Catalogue of his valuable Mathematical and Scientific 



Library, etc. (Tract.) 8vo. London, 1851. 



Davila (P. P.). Catalogue systematique et raisonne des curiosites de la Nature 



et de I'Art, qui composent son Cabinet. 3 vols. 8vo. Paris, 1767. 

 Davis (James W.) and Lees (P. A.). West Yorkshire : an Account of its 



Geology, Physical Geography, Climatology, and Botany. 



8vo. London, 1878. 

 Davis (Joseph Barnard). The Neanderthal Skull. (Tract.) 



8vo. London, 1864. 



Davreux (C. J.). Essai sur la constitution geognostique de la province 

 de Liege. (Tract.) 4to. Brussels, 1838. 



Davy (Sir Humphry). A Discourse, introductory to a Course of Lec- 

 tures on Chemistry. (Tract.) 8vo. London, 1802. 



. On the Analysis of Soils, as connected with their Improvement. 



(Tract.) 4to. London, 1805. 



r— — . Electrochemical Eesearches on the Decomposition of the Earths, 

 etc. (Tract.) 4to. London, 1808. 



. - . On some new Phenomena of Chemical Changes produced by 

 Electricity, particularly the decomposition of the Pixed Alkalies, 

 etc. (Tract.) 4to. London,lS08. 



— — . E-esearches on the Oxymuriatic Acid, its Nature and Combina- 

 tions ; and on the Elements of the Muriatic Acid. (Tract.) 



4to. London, 1810. 



. On a combination of Oxymuriatic Gas and Oxygene Gas. 



(Tract.) 4to. London, 1811. 



■ . On some Combinations of Phosphorus and Sulphur, etc. (Tract.) 



4to. London, 1812. 



■ . Some Experiments and Observations on the Substances produced 



in different Chemical processes on Pluor Spar. (Tract.) 



4to. London, 1813. 



. Some further Observations on a new Detonating Substance. 



(Tract.) 4to. London, 1813. 



. On the Safety-lamp for Coal-miners ; with some researches on 



flame. 8vo. London, 1818. 



. Six Discourses delivered before the Eoyal Society at their Anni- 

 versary Meetings, etc. (Tract.) 4to. London, 1827. 



. Charge brought against him by C. Babbage. See Babe age 



(Charles) and Davy (John). 



Davy (John). The West Indies before and since Slave Emancipation, 

 comprising the Windward and Leeward Islands' military command. 



8vo. London, 1854. 



. Did Sir Humphry Davy promise to nominate Mr. Babbage as 



the Secretary of the Eoyal Society in November, 1826 ? (Tract.) 



8vo. London, 1865. 



