INDEX. 205 



of non-attendance to the variation of the compass illustrated, 



107. Proofs tliat the variation is affected by the nature of the 



ship's cargo, 1 1 1 

 Variation of the compass, table of, vi. 89. Causes of, and 



observations to account for it, 89. Further observations on, 



169. Solution proposed for it, 371 

 « ■ observations on, during the late voyage 



of discovery to the north pole, ix. 81 

 (daily) of the horizontal and dipping-needle under a 



reduced directive power, xvii. 128 



—— of thermometers, xv. 160, 369; and of barometers, 371 



annual of some of the principal fixed stars, xix. 278 



Variolous eruption, employment of caustic for the destruction 



of, XX. 200 

 Varnish (black), process for making, used in Bengal, x. 315 

 Vase (beautiful), discovered at Pompeii, vii. 403 



(cinerary), discovered at Athens, xiii. 72 



Vauban (M.), anecdote of, xiv. 221 



Vaudoncourt (General), notice of a map of Turkey, by, ii. 212 



Vauquelin (M.), mistake of, concerning the specific gravity of 



sulphuric acid, i. 70 

 > experiments of, on the egot or spur of rye and wheat, 



ii. 320 

 on the sulphurets, oxides, and some other combinations 



of platinum, iv. 74. Researches of, on sulphurets, 372 

 on the action of nitric acid, chlorine, and iodine. 



viii. 157 



experiments of, on the decomposition of blood, xi. 394 



on the combination of acetic acid and alcohol with 



volatile oils, xiv. 425 



on crystalline matter formed in a solution of cyanogen. 



XV. 302. Analytical examination of touchstone by, 315; and 

 of an aerolite, 316 



reflections on volcanoes by, xvi. ISO 



experiments of, on the acetate of copper, xvii. 383 



on the active principle of colocynth, xviii. 400 ; and 



of the Daphne Alpina, 401 



