INDEX. 
G 
Gallon , imperial standard, defined, 8. 
Galvanometer, Sir H. Davy’s description of one used by him, 391. 
Gases, their distribution in the atmosphere at different heights, 185. 
Gauss, Professor, his principle of solar signals employed in the 
Irish Survey, 325. 
Geodcetical operations, Mr. Drummond on a means of facilitating, 
324 — description of instruments used in by ditto, 327 et seq. 
Geodcetical stations between London and Paris, 77 etseq. 
Gilbert, D. Esq. on the mathematical theory of suspension bridges, 
202 . 
Grain , determination of the imperial standard, from the cubic 
inch of water, 8. 
Greenwich , observations at, for determining the difference of meri- 
dians between it and Paris, 93. 
H 
Heat, animal, proofs of its being influenced by the nerves, 60. 
radiation of through glass screens, Mr. Powell’s experiments 
on, 372. 
of July 1825, amount of, 69 - — of 1808, 70 — at Kingston in 
Jamaica, 71. 
Heberden, Dr. W., his account of the heat of July 1825, with re- 
marks on sensible cold, 69. 
Heliotrope of Professor Gauss, its principle employed by Mr. 
Drummond, 325 — description of a, 327. 
Hennell, H. Esq. on the action of sulphuric acid on alcohol, 240. 
Herschel, J. F. W. Esq., his account of observations for ascer- 
taining the difference of meridians between Greenwich and 
Paris, 77. 
■■ on the parallax of the fixed stars, 266. 
Historical details relative to electro-chemistry, 384. 
Home, Sir E. Bart., his additional proofs of animal heat being in- 
fluenced by the nerves, 60. 
his Croonian Lecture on the structure of a muscular fibre, 
from which are derived its elongation and contraction, 64. 
on the coagulation by heat of blood in an aneurismal 
tumour, 189. 
on the production and formation of pearls, 338. 
Horns of deer. Experiments on their heat, 60. 
Hydrocarbon, its union with sulphuric acid, 144. 160. 
— with muriatic ditto, 160. 
