198 sHechanical Saw, &c- 
A. part crystallized tartaric acid, 2} peroxide of manga- 
nese, 2} sulphuric acid, diluted with two or three times its 
weight of water. 
Gay Lussac confirms this interesting result of Dobe- 
reiner. 
30. Saw moved by Mechanism.—It is stated in‘an official 
report made to the Society for the Encouragement of Na- 
tional Industry, Paris, that the mechanism invented and ap- 
plied by Brunel, in England, has been ascertained (accord- 
ing to an investigation made by order of the British admiral- 
ty,) to produce an annual saving to the government of seven 
thousand pounds sterling; and asa mark of benevolence 
and esteem for M. Brunel, this sum has been guaranteed to 
_ him, notwithstanding he has for a long time derived a liber- 
al benefit from his useful labors, 
31. The Society for the Encouragement of National Indus- 
try in France, expended during the year 1821, in the various 
objects of its association, the sum of 43,955,°.5, francs. Its 
income during the same year was 49,838,4,°, francs. A 
hy, a university at Coimbra with six facul- 
ties, and a college for preparatory studies. The university 
and the college enumerate, annually, from 1280 to 1600 stu- 
