INDEX. 48} 
and flowing well, 354—his remarks on the summer birds 
of passage and on migration, 453. 
H 
Hassenrratz and La Grance, their objections to Craw- 
Forp’s theory of animal heat considered, 20. 
Henry, Mr. Thomas, his remarks. on a thunder storm, 263. 
Henry, William, M.D. on galvanic electricity, 293—his 
description of an eudiometer, &c. 384—on uric acid, 391. 
Horstey, Dr. his mistake in a comment on Newton, 210. 
J 
Jarrotp, Thomas, M. D. his essay on national character, 
328. ; 
Jouns, Rev. William, of the origin of + figurative lan- 
guage, 74, 
L 
La Ptact, M. thinks that moving force may be measured 
by any power of the velocity, 134, 200—supposes the 
collision of elastic bodies to be performed in time, and 
that of inelastic bodies to be instantaneous, 193. 
Law of continuity, in the communication of motion de- 
fended, 194, et seq. and 199—originated with Gate, 
217—opposed by Rosins and Mactaurin, ibid.—sup- 
ported by Leisnirz and his followers. 
Lawson’s geometrical theorems demonstrated, 414, et seq. 
Lightning, remarkable effect of, 259, et seq. 
M 
Mactaurin, Mr. his celebrated argument against the vis 
viva, 182 ~—<supposes there may be perfectly hard non- 
elastic bodies, 192 
cases of collision, 206———opposes the law of continuity, 
217. 
Mattuus, Mr. remark on his principles, 347, 348. 
Martin, Mr. William, on rotten-stone, 313. 
Measure of moving force, great practical importance of, 
112 ~is the pressure multiplied by the space, 223, &c. 
3P 
his defective solution of certain 
