A HISTORY OF SCIENCE 



WELLS, W. C. See vol. iii., p. 185. 

 Essay on Dew, London, 1818. 



IV MODERN PHYSICAL AND CHEMICAL 



SCIENCES 



BLACK, JOSEPH. See vol. iv., p. 12. 



De acido e cibis orlo, et de magnesia, reprinted at 

 Edinburgh, 1854. In this he sketched his discovery of 

 carbonic acid. Later this paper was incorporated in his 

 Experiments on Magnesia, Quicklime, and Oilier Alkaline 

 Substances. 



BUNSEN, WILLIAM. See vol. iv., p. 69. 



CAVENDISH, HENRY. See vol. iv., p. 15. 



"Experiments on Air," in Phil. Trans., 1784, p. 119. 

 This paper contains Cavendish's discovery of the com- 

 position of water and of nitric acid. 



DAGUERRE, Louis J. M. See vol. iv., p. 70. 



Historique et description des precedes du daguerreotype 

 et du diorama, Paris, 1839. (This was translated into 

 English.) 



DALTON, JOHN. See vol. iv., p. 40. 



"On the Absorption of Gases by Water," read before 

 the Literary and Philosophical Society of Manchester, 

 October 21, 1803. This was published in 1805, and con- 

 tains the atomic weight of twenty-one substances, some 

 of which were probably added, or corrected, between 

 the date of the first reading and the publication. 



DAVY, SIR HUMPHRY. See vol. iv., pp. 48, 209. 



"Some Chemical Agencies of Electricity," in Phil. 

 Trans, for 1806, vol. viii. Researches, Chemical and 

 Philosophical, chiefly concern-ing Nitrous Oxide or De- 

 phlogisticated Nitrous Air and its Respiration, London, 

 1800. 



DEWAR, JAMES. See vol. v., p. 39. 



"Solid Hydrogen," in Proc. Roy. Inst. for 1900. "The 

 Nadir- of Temperature and Allied Problems" (Bakerian 

 Lecture), Proc. Roy. Soc., 1901. 



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