200 Scientyic IntelU^mce. 
piece weighing from 80 lb. to 90 lb. The cellar had an opening 
to the north, which was carefully shut up with dung, and the 
door was concealed by bundles of vine props, which freely ad- 
mitted the air. On the morning of the 4th August an intole- 
rable smell was felt, and the person who entered the cellar was 
surrounded with a thick smoke, which he could not support. 
A short time afterwards he re-entered with precaution, holding 
a stable lanthorn in his hand, and he was astonished to perceive 
a shapeless glutinous mass, apparently in a state of putrefaction. 
He then removed the dung from the openings, and as soon as a 
circulation of air was established, the cloth instantly took fire. 
In another corner of the cellar lay a heap of stuffs which had 
been ungreased and prepared for the fuller, but they had suf- 
fered no change. The above particulars were carefully esta- 
blished by M. Cochard. — Comte rendu des Travaux de la Soc. 
Roy. U* Agricult, et HUt. Nat. de Lyons ^ pour 1817. 
24. Morphia. — Dr Thomson has found that the constituents 
of morphia are as follows : 
Or nearly in volumes. 
Hydrogen, 
0.0555 
, 18 
Carbon, 
0.4528 
24 
Oxygen, 
0.4917 
1.0000 
10 
Hence the weight of an 
Annals of Phil. No. xc. 
integrant particle of 
p. 470. 
morphia is 40.25. 
25. Rosin. — Dr Thomson has found that common rosin com 
sists of 
In atoms. 
Carbon, 
7.500 
10 
Hydrogen, 
1.S75 
11 
Oxygen, 
3 000 
11.875 
3 
Ann. of Phil. No. xc. p. 469- 
III. GENERAL SCIENCE. 
26. Growth of the Uredo Nivalis, the colouring matter qf 
Red Snow. — -Mr F. Bauer has found that the red globules of 
