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- Miscellaneous Intelligence. 299 
Bombyx Roylei—has been introduced into France. The three before in- 
troduced are the ZB. mylitha Fabr., from Bengal, B. Pernit Guerin-Méne- 
ville, from North China, and B. Yama-mai G.-M., from Japan. The new 
species is from the plateaus of the Himalaya, on the frontiers of Cash- 
mere. It lives on a thick-leaved oak, the Quercus incana. Guerin- 
Méneville states that the worm can be easily acclimated in central and 
tions for the care of the Yama-mai of Japan, published in Guerin- 
Meneville’s Revue de Sericiculture comparée (1863, p. 33), serve also for 
& new species.— Cosmos, Ap. 28. 
tained that this is owing to the diminished pressure of the atmosphere 
on the Mexican plateau. It follows that cannon may serve as a kind of 
barometer for measuring altitudes— Les Mondes, July 7. 
per. from Maize—In the manufacture of paper from maize, 
for two days, at the end of which time they are separable into three 
parts: (1) the coarse rihs or veins, which serve, like hemp or flax, for 
tive oxyd of d afterward, with care, 1 part of sulphuric acid. 
Sa ns a wood by means of a brush 
4ve seconds in a solution of oxalic acid (1 of acid to 100 of water) ; next, 
after washing it, it is put in a vessel containing a solution of gallic acid 
(10 grains of acid to 300 of distilled water): and finally washed again 
and dried. The process should be carried forward with care and prompt- 
‘Ness, that any accidental discoloration of the paper may be avoided.— 
‘Cosmos, March 24. 
, M. 2 : 
9. The ravages of Insects a cause of their destruction.—It is well 
known that after ia have for 5 or 6 years —, their en 
on the trees of a region, they often suddenly disappear, and have no fu 
Teturn again for two or three or more years to come. It has been shown 
