[ 376 ] 



INDEX TO VOL. XX. 



ACJD£MY of Bdlcs Letires, 



&c. Stockholm, 368 



jicU, fhospboric. On, 160 



Adiitr stotiei. On, 17 



J-trial na'vhationf 8 i 



Agriculture. Board of, 79, 1 78, 



^74> 3^9; ir.or,s lauds, 589; 



Bath b'ociety of, 275 



Ah'okol cf sul^'hur. To prepare, 



Alkalis, Patent for purifying, 

 190 

 Alum, On, 269 



Americii, Voyage to the north- 

 ■west coast of, 3, 106 



Analysis of ceriun:!, 1 3 5 



A?ialysfs of Uc, 3)0 



Analytical reasoning. On, 193 

 Aimr.als. Fondness of, for salt, 

 .98- 

 Anthropophagi In America, 7 

 Antiquities, 93, 282, 36S 



Arcca-mit tree. On, 316 



Arscniatc of lead. Ratio of in- 

 gredients in, 66 

 Arsenic. To separate, from any 

 metal, 6> 

 Astronomy i 70, 188 



Barings patent. 



Barber on preventing water 



from l)"eezing, 

 Barret's patent, 

 Bath Agricultural Society^ 

 Bitdlit's voyage, 

 Beans, French. To prestr 



bengal. Population of, 

 Rennet's patent. 



.95 



pipes 



209 



95 



275 

 300 

 ve, 



95 



Bcrnicr, P. F. Memoirs of, 



IC3 

 jB'r!s,7/KJ on cerium, 154 



Bits of bridles. Patent for, 271 

 Blasting •with gti".poiuder. On, 

 208 

 Board cf Ag rir u h ure, 79, } 7 S , 



274. 3'''9 

 Boohs. New, 78, 1 76, 36; 

 Boring the earlh. Patent for, 



'9^ 



Borneo. Account of, 332 



Botany, 285 ; discoveries in, 304 

 Bi'Jjiijgtons patent, 95 



Cild'vell's patent, 95 



Canal. OF the Tavistock, 370 

 Carbon. Affinity of, for cla)', 

 &c. 31, 134, 23a 



Carhuraled sulphur. Properties 



Carey'* s meteorological table, 96, 

 192, 288, 37J 

 Catoptrical instruments of the a7i- 

 ticnts. On, 14 



Cement for building. Indian, 33 1 

 Ceres. R. A. and dec. of, 188 

 Cerium, a new metal, 195 



Chrome. Pigment from, 266 

 Clasps. Patent for, 271 



Clay. Affinity of, for carbon. 



&c 



)S- 134. 234 



Clajf eld's patent, 190 



Cobalt, To separate from iron 



and nickel, 66 



Clouds. Stones from, 372 



Coco-nut tree. On, 3 1 6 



Comavc mirrors described by 



Dee, ' ' 19 



Copper. 



