INDEX. 



Smeaton, Mr. on diyidlng instru- 

 ments, 6 



Smith, Dr. 97 



Solids, properties of, S21 



Sound, propagation of, how far influ- 

 enced by the operation of light, 28 



___ conveyed through solid bodies, 

 7G, 188 



Spratt, Lieut. J. his invention of a ho- 

 mograph, or method of communica- 

 tion by signals, on sea or land, 325 



Stone-ware tools and instruments, 257 



Succinic acid, see A.cid. 



Suersen, M. on the mode of preparing 

 benzoic acid, 79 



Sulphate of copper, 308 



Sympathetic inks, 373 



T. 



Tantalum, see Columbium. 



Telegr.iph, a new and easy invention as 

 a substitute for one, 326 



Thackeray, Dr. W. his plantation of 

 forest and fruit trees, 315 



Theatres, construction of, so as to 

 render them secure against accidents 

 by fire, COX 



Thenard, M. on the effects of potas- 

 sium on iron, 51 



Thompson, Dr. 147 



Titanium precipitated by tannin, not by 



gallic acid, 384 

 T. L. N. on the study of mosses, 96 



Tools of stone-ware, 257 



Trafalgar, battle of, anecdote relative 



to, 525 

 Tralles, M. on the density of water, 78 



TrommsdoriF, 375, 384 

 Troughton, Mr. E. his account of a 

 method of dividing astronomical and 

 other instruments, by ocular inspec- 

 tion, in which the usual tools for 

 graduating are not employed ; the 

 whole operation being so contrived, 

 that no error can occur but what is 

 ■citargeable to vision, when assisted by 



the best optica! means of viewing and 

 measuring minute quantities, 1, 100 

 Troughton, Mr. J. his method of di- 

 viding instruments, 6 



Vauquelin, M. his analysis of a meteoric 

 stone that fell at Stannern in Moravia, 

 22d May, 1808, 54— On the pech- 

 blende, an ore of m-aniuin, 69— Oa 

 the graphic granite, 77— His analyti- 

 cal experiments on the soft roe of 

 fishes, 273 



Vegetables preserved by salting, 233 



Venus' fiy-trap, description of,^92 



Violet pickle, 233 



Vision, single, limits of, 123 



Vogel, M. 235 



Voigt, M. 97 



Volcanic country in Catalonia, 158 



U. 



Unin, Count, his description of the 



meteoric stone of Stannern, 54 

 Uranium, observations on, 69 



W. 



Water, greatest density of, 78 



Water, mode of freeing from oxigen, 

 373 



Weaving, improvement in, 315 



Werner's " Geognosy," 318 



Wernerian Natural History Society, 72, 

 239,517 



White, R, Esq. his improved file for 

 receipts and letters, 330 



VVilldenouw, M. on the plant that pro- 

 duces gum ammonia, 79 



Winter, Mr. R. his mineralogical outline 

 of the district containing the alumi- 

 nous schistus, in tlie county of York, 

 with the entire process practised in 

 the raaoufaclure of alum ; to which 

 is added, an analysis of the sulphate 

 of alumine, and the supersulphate of 

 alumine and potash, with practical 

 observations ^nd remarks, 241 



Withering, 



