INDEX. 



209 



Account of a remarkable one in the Tomboro mountain in 



the Isle of Java, 248 

 Volcanoes of St. Vincent, notice of, viii. 251. Analysis of dust 



from it, 252 



of Tartary, notice of, x. 197 



(new), notice of, in Portugal, xi. 407 



of mud in bogs, probable origin of, xii. 427 



in Iceland, notice of, xiii. 440. In the western extre- 



mity of North America, ib. 



geological remarks on the actions of, in producing cer« 



tain elevations of land, xiv. 2Q2. Observations on those of 

 Sicily, 322 



of mud, eruption of, in Sicily, xvlii. 193. Account of 



the volcano of Purace, 404. Obsidian thrown out by the 

 volcano of Sotara, 408 



of Etna, account of the eruption of, 1819, xix. 227 



considerations on, xx. 350 



Voltaic apparatus, a new one described, i. 193 



■ pile (new), notice of, viii. 177 



electricity, observations on, xii. 183. Contact in, 185 



. new form of, apparatus, xv. 143 



trough of Dr. Hare, notice of, xvii. 378 



• . pile, on the distribution of electricity in, xviii. 171 



and current observations on, xix. 337. Apparatus for 



exhibiting the simultaneous rotation of two voltaic conducting 

 wires round the opposite poles of magnets, 336. 



piles (dry), notice of, xx. 169 



Volutoe, character of several new shells belonging to the order 



of, xviii. 31 

 Vomiting, experiments on, iv. 9 1 

 VoRuz (N.), geometrical process of, for the division of a right 



line, xviii. 157 

 VuLLiAMY (B. L., Esq.), improved method of constructing the 



dead-escapement for clocks, xiv. 334 

 on its theory, and the reducing it to practice for clocks 



with seconds, and larger pendulums, xvi. 1 



P 



