4-16 



searches on the, i.41G; experiments 

 to prove tliat the beneficial effects of 



. many medicines are produced by the, 

 ii. 41, 42; on the circulation of, in 

 the class Venues of Linnaeus, ii. 53 ; 

 on the changes it undergoes during 

 coagulation, ii. 90, 91 ; on the com- 

 ponent parts of, ii. 1 1 8 ; on the buify 

 coat of, ii. 170; existence of free 



. carbonic acid in, doubtful, ii. 202 ; 

 coagulation of, by heat in an aueu- 

 rismal tumour, ii. 268. 



Boar, wild, structure and growth of the 

 grinding teeth of, i. 52. 



Bolton (G. B.), account of the united 

 Siamese twins, ii. 397. 



Bombay, geographical situation of, ii. 

 176, 177. 



Blackburn (Rev. J.), description of a 

 sounding-board in A. tterclifte church, 

 ii. 349. 



Boracic acid : method of analysing 

 stones containing fixed alkali by 

 means of, i. 196 ; analysis of, i. 321. 



Bournon (Count de) on the arseniates 

 of copper and of iron, from Cornwall, 

 i. 43, Mr. Chevenix's analysis of, i. 

 45 ; on the corundum stone, i. 82 ; 

 on a new species of carbonate of 

 lime, and of oxide of iron, i. 125; 

 on the formation of mineral sub- 

 stances, and on the different kinds 

 of sulphuret of copper, i. 134, on a 

 triple sulphuret of lead, antimony, 

 and copper, i. 134, Mr. Hatchett's 

 analysis of, i. 138. 



Bovey coal, on a peculiar substance 

 found with, i. 159. 



Brain : influence of on the generation 

 of animal heat, i. 439 ; influence of 

 on the action of the heart, i. 388 ; 

 on the functions of, i. 507 ; micro- 

 scopical observations on, ii. 137; 

 on the internal structure of, as com- 

 pared with that of fishes, insects and 

 worms, ii. 203 ; on the materials of 

 the, ,ii. 247 ; on the nervous circle 

 which connects the voluntary mus- 

 cles, ii. 266. 



Brande (W.) on guaiacum, i. 216; on 

 the urine of the camel, i. 244 ; on 

 the differences in the structure of 

 calculi, i. 303; analysis of the fluid 

 in the intervertebral cavity of the 

 Squalus maximus, i. 330 ; on albu- 

 men, and other animal fluids, i. 341. 



Brande (W. T.) on the effects of mag- 

 nesia in preventing an increased for- 

 mation of uric acid, and on the in- 

 fluence of acids upon the urine, i. 

 363, 469 ; experiments to ascertain 

 the state in which spirit exists in fer- 

 mented liquors, i. 408 ; account of 

 a vegetable wax, from Brazil, i. 404 ; 

 chemical researches on the blood, 

 i. 416; on the state in which alcohol 

 exists in fermented liquors, i. 450 ; 

 on some new electro-chemical phe- 

 nomena, i. 480; on an astringent 

 vegetable substance from China, ii. 

 58 ; on the composition and analysis 

 of the inflammable gaseous com- 

 pounds from coal and oil, and on 

 their heating and illuminating pow- 

 ers, ii. 119. 



Brazil, vegetable wax from, i. 404. 



Brentford, organic remains found near, 

 i. 459. 



Brewster (Sir D.) on some properties 

 of light, i. 453 ; on the affections of 

 light transmitted through crystal- 

 lized bodies, i. 490 ; on the polariza- 

 tion of light by oblique transmission 

 through all bodies, i. 492 ; on new 

 properties of light exhibited in the op- 

 tical phenomena of mother-of-pearl, 

 i. 502 ; on the properties impressed 

 upon light by the action of glass, i. 

 506 ; on the optical properties of 

 heated glass and unannealed glass 

 drops, ii. 1 ; on the depolarization of 

 light, as exhibited by various bodies, 

 ii. 4 : on the effects of pressure in 

 producing that crystallization which 

 forms two oppositely polarized 

 images, and exhibits the . comple- 

 mentary colours by polarized light, 

 ii. 7 ; on the laws which regulate the 

 polarization of light by reflexion, ii. 

 14 ; on the multiplication of images, 

 and the colours which accompany 

 them, in some specimens of calca- 

 reous spar, ii 25 ; on new proper- 

 ties of heat, ii. 33 ; on the commu- 

 nication of the structure of doubly- 

 refracting crystals to glass, muriate 

 of soda, fluor spar, &c. by mechanical 

 compression and dilatation, ii. 39 ; 

 on the structure of the crystalline 

 lens in fishes and quadrupeds, as 

 ascertained by its action on polarized 

 light, ii. 50 ; on the laws of polari- 



