INDEX. ti7 



DoNKiN (B. Esq.), evidence of, with remarks in the cause of 



Severn and Co. against the Imperial Insurance Company, x. 



326 

 Donovan (Mr.), experiments of, on the compounds of mercury, 



viii. 358 

 Douglas (Sir H.), observations of, on M. Carnot's theory of de* 



fence by vertical fire, viii. 290 

 Dracontius, poems of, discovered, v. 143 

 Drais (Mr. C), new carriage invented by, vi. 349 

 Drake (D., Esq.), natural and statistical view of Cinclnnata 



and the Miami country, iii. 81-88 

 Drapiez (M.,) antidote recommended by, for poisons, x. 192 

 Drawing tables, improved, notice of, xiii. 222 

 Dreaming, remarks on, vii. 255 

 Drosometer, notice of, xviii. 185 

 Drovers of South America, manners of, iii. 341 

 Druidical sepulchre, notice of, xi. 412 

 Dry rot, suggestions for preventing, v. 122. viii. 348. 

 in ship timber, prevented by filling up their pores with 



salt, X. 448 

 experiment for preventing, xv. 141 



Dry voltaic piles, notice of, xx. 169 



Dryness of air, or gases, test of, xv. 160 



DuBOUT (Madame), account of the alcalino-vegetable poudrettes 

 of, xii. 334 



Ductilimetre, or instrument for measuring the ductility of cer- 

 tain metals, notice of, xiv. 221 



DuFouR (Colonel), experiments of, upon the tenacity of iron wire, 

 xvi. 367. Account of the wire bridge of suspension, con- 

 structed by him at Geneva, 369 



Dufton, acc6unt of a lead mine at, ii. 198 



Dugong, an herbivorous animal, from Sumatra, notice of, xii. 370 ; 

 peculiarities that distinguish it from the Manatee of the "West 

 Indies, 375 



DuLONG and Petit (MM.), memoir of, on radiant heat, v. 364. 



•— and Thenard (MM.), experiments by, on the properties 



F 2 



