110 INDEX. 



Ivory (Mr.), apology for the postscript on refraction, in answer 



to his remarks, xii. 390 

 observations and calculations of, on astronomical refractions, 



xviii. 373 



Jackson (Mr.), hypothesis of, on the termination of the Niger, 

 i. 267 



cursory observations of, on the geography of Africa, 



and on the errors of European travellers, caused by their igno- 

 rance of Arabic, vii. 329 



— on the plague in Africa, viii. 1S3 



Jalap, a new vegetable principle discovered in, xvii. 386 



James's powders, composition of, xvi. 167 



Jameson (Prof.), analysis of mountain tallow by, xviii. 187 



January, 1824, astronomical phenomena for, xvi. 289 



Japanese, high civilization of, ii. 197 



Jardine (Mr.), experiments of, on the strength of leaden pipes, 

 XX. 375 



Jasper, general observations on, xi. 63. Synopsis of its varie- 

 ties, 70 



Jass^rt (M.), notice of a quadruple salt discovered by, xvi. 384 



Jaundice, cure of, by phosphoric acid, xiii. 233 



Java, account of a singular volcanic eruption in the island of, i. 

 248-258 



geological constitution of, ii. 193. Remains of antiquities 



discovered there, 194. Account of the language of the Ja- 

 vanese, 'i6. Importance of cultivating it, 330. The fable of 

 the oopas, or poison-tree, of, exploded, 331. Account of the 

 antshar, or genuine poison-tree, and of the manner of prepar- 

 ing the poison, 332. Results of experiments with the poison, 336 



Javal (M.), experiments of, on some combinations of gold, xii. 318 



Javanese, inhabitants of Batavia, manners and character of, vii. 

 12 ; peculiar antiseptic powder used by, notice of, 274. 



Jeffreys (Mr.), account of the chimney invented by, for condens- 

 ing smoke, xviii. 270 



