64 INDEX. 



Derby Infirmary, mode of warming and ventilating, ii. 201-204 



Derbyshire, notice of the mineral productions of, viii. 349 



Desert (tlie Great), account of, i. 273 



Desfosses (M.), experiments of, on the formation of alcohol, by 

 fluoboric gas, xi. 394 



on the manner of estimating the quantity of sulphuretted 



hydrogen gas in sulphurous mineral waters, xiv. 445 



Despretz (M.) on the destiny of vapours, xv. 297 



Desquamation of certain rocks, observations on, xiii. 237-257 



Dessaigens (M.) on the influence of temperature, mechanical pres- 

 sure, and the humid principle on electricity, ii. 154. On the 

 phenomena of repulsion and attraction without electricity, 427 



— — — experiments of, on galvanic action, iii. 207 



Des Vaux (M.), notice of his memoir on the methodical arrange- 

 ment of Lycopodia and Filices, iv. 87 



DeuChar (M.), on the tenacity of glass and siliceous bodies, 

 xiv. 439 



Devillb (Mr. J.), evidence of, in the cause of Severn and Co. 

 against the Imperial Insurance Company, x. 33G 



Dew, remarks on the deposition of, xvi. 35-41 



observations of some phenomena, relative to the formation 



of, on metallic surfaces, xvii. 1-12 



annual quantity of, fallen, xviii. ISG 



Diabetes, singular case of, xv. 386 



Diallage rock of Shetland, observations on, x. 103-108. 

 Synopsis of its different divisions, 108 



Diamond, combustion of, by the blowpipe, ii. 113. Observa- 

 tions on the glazier's diamond, 205. Account of the Mattan 

 diamond, 342 



m observations on the combustion of, iv. 155 



■ imbedded, notice of, v. 378 



new apparatus for the combustion of, ix. 264 



on the structure of, x. 1G7 



• — fusion of, xvi. 160. Matrix of the Brazilian, 178 



best adapted for microscopic magnifiers, xix. 133 



Djdot (M.), process of, for casting new stereotype plates, xv. 138 



