INDEX. 



Acii), oximuriatic, see Ga& 

 AcitJ, boracic, experiments on its com- 

 binations with potash and soda, 119 

 Affinity, cheaiical, referred to elec- 

 tricity, on the hypothesis of, 12 

 Agriculture, means of improving, 314 

 Agricultural instruments, their respec- 

 tive meHts, 171 

 Air engine, a new, described, 175-^An- 



nother for extracting foul air, 330 

 Air pump for procuring a perfect va- 

 cuum, its construction described, 107 

 Albumen of seeds, its use, 23(> 

 Algorithm of imaginary quantities, de- 

 fective, 254 

 Alkalis, their nature, &c., 35, 38, 59 

 —How acted upon by oximuriatic 

 gas and oxigen, 113, 222 

 Alkaline metalloids, observations and 



experiments on, 183 

 Allan, Mr. on the rocks in the en- 

 virons of Edinburgh, 151 

 AUanite, a new mineral from Green- 

 land, 47 

 Alum mines of Aubin, 352 

 Ammonia, amalgam of, its composi- 

 tion, 60, S80 

 Analysis of allanite, 47— -Of calomel 

 and corrosive sublimate, 228— Of 

 tobacco, 153— Of the belladonna, 153 

 —Of pure oximuriatic gas, 279— 

 Of sodalite, 289— Of an ancient bell, 

 315 

 Apes, classification of, 239— Two new 



species of, ib, 

 Arago, M. 77, 78 

 Arbor vitae, description of, 208 

 Asparagus, gerinination of, 237 

 Atomic principles of chemistry, re- 

 view of the theory of, 143 

 Attraction, considered as an ultimate 



property of matter, 18 

 Aubm, mineralogy of, 352 

 Azimuths, metiiods of determining, 



77 



Vol. .XXIX. 



B. 



Bachelier*s preservative mortar. 155 

 Baker, Mr. J. his improved implement 

 for extirpating docks and thistles, 301 

 Balls, Mr Thomas, his descriptien of 



a screw adjusting plough, 298 

 Balm of Gilead, natural history of, 208 

 Barberry, flower of the, its motion, 



<Src., 213 

 Barometer, improvements in the scale 



of, 105 

 Barometrical measurements, on Mr. 



Hainond's coefficient for, 77 

 Bean stalks, fibres of, converted into st 



substitute for hemp, 278 

 Bell, an ancient, described, and ana- 

 lysed, 315 

 Belladonna, analytical examination of 



.153 

 Berthollttt, M. on the loss of weight of 

 fused potash and soda, 118, 120, 223 

 —On the power of air in conducting 

 heat, 263 

 Bichat, M. 319 

 Biot, M. 77 

 Blanchard, Rev. J. his table of the rain 



in various places in 18l«, 134 

 Bournon, count, on allanite, 49 — On 



sodalite, 286 

 Bostock, Dr. observations on his revie\#- 

 of the atomic principles of che- 

 mistry, 143 — Errors in his quotations 

 from Mr. Dalton's book, 149 

 Bouvard, M. 75 

 Brain, its influence on the action of the 



heart, 359— Experiments, 360 

 Brass, its combustion in oximuriatic 



gas, 140 

 Bremner, Rev* James, his life boat, 86 

 The inventor of locks for cannon, 105 

 Brewster, Dr. his new instrument foir 



measuring capillary att-^ction, 151 

 Brodie, Mt. B. C. his Croonkn lecture, 



359 

 Brongniart, M. 1 56, 239 

 Bucholz, M. on alkaline metalloids, 189 

 C c Bud5, 



