INDEX. 9 



Ammonia, observations on some cases of the formation of, xix. 

 16-26. Advantageous preparation of compounds of, 344 



Ammoniacal gas, action of on copper, xv. 157 



inflammability of, xvi. 165, 166 



Ammonite discovered, containing shells, xviii. 188, 411 



Ampere (M.),newelectro-magnetical experiments of, xiv. 441, 442 



experiments of, on the nature of the electric current, 



xviii. 381, 382 



Amulets, origin of, xiv. 360 



Anagram, a curious one, xiii. 300 



Analogies between undecompounded substances, observations on, 

 i. 283-286 



among different rocks, observations on, and on their 



resemblances to unconsolidated strata, xix. 200-208 



Analysis of new Scientific Books, xv. 108-127, 320-348. xvi. 

 134-138, 301-347. xvii. 105-130, 335-359. xviii. 111-144, 

 332-338. xix. 100-108, 294-327. xx. 113-160, 329-356, 374 



— — of sea-water, i. 292, 294, 297 



« of soils, process for, iii. 193, 194 



Analysis of mineral waters, observations on, x. 217, 230. Of 

 rhubarb, 288-292. 



Analysis of ferro-arsenical sulphuret of copper, xii. 30-32. Of 

 an antimoriial sulphuret of copper, 32-34. Of a cupreous 

 sulphuret of lead and antimony, 34, 36. Of the sulphuret 

 of copper and bismuth, 36-37. Of the blue iron ore of 

 Eckartsberg, 38. Of granular chromic iron ore, 39, 40. Of 

 alkaline minerals, 169, 171. Table of their results, 328. Of 

 black and green tea, 201-206. Of cererit, or cerite, 262-264. 

 Of the oxide of cerium, 264, 265. Of a compact ore of Titanium 

 from Arendac, 265, 266. Of the topaz, 266. Particularly that 

 of Saxony, 266-268. Of zoisit from Carinthia, 268, 269. Of 

 the foliated augite of Carinthia, 269, 270. Of conchoidal apa- 

 tite, 271, 272. Of the columnar brown spar of Mexico, 272- 

 274. Of dolomite, 274. Of anhydrite, 275. Of bitter spar 

 from the Tyrol, 276. Of the green earth of Verona, 276. Of 

 the alum-stone of Tolfa, 277 : and of Frienwald, 278-282. Of 

 the crystallized calamine of Limbourg, 328. Of an arsenical 



