Foreign Literature and Science. 383 
Tt is, however, on the canabis, less rich in soluble resinous 
Pibieeanise The solubility of the bitter principle of the hop, 
appears due, according to aspail, to the simultaneous 
presence of oil and resin which exist in these glands. —Idem- 
13. Charcoal.—From the experiments of CHEVREUSSE it 
appears that charcoal exists in two different states, depend- 
ent on the temperature to which it has been exposed. When 
wood is distilled in a retort, until it ceases to emit vapour, 
the charcoal produced is in the first state of carbonization. 
Tn urging the heat of the retort to a high degree, the second 
state is produced. 
Electricity—Charcoal is a good conductor only in the 
second state, or after an exposure to a violent heat. In this 
state it is very suitable for surrounding the bottom of a light- 
ning rod, for the purpose of conveying the electricity into the 
earth. If used in this state in lieu of copper in the galvanic. 
pile, it is very effective. 
Caloric.—It is only in the second state that charcoal is a 
good eenditior of heat. 
D —lIn this state its density is considerably pen 
than in the first. 
Hygrometry. Coal of the same wood exposed to air, sa- 
turated with moisture, absorbs eventually the same quantity, 
but this absorption is more rapid in in the first state. Pulver- 
ised coal preserves the same relative properties as whole 
pieces, but the former has less absorbent powers. 
Combustibility—Charcoal in the first state burns more ea- 
second. The 
sily than in the author ascribes this to the une- 
qual conductibility of the substance in 
states. —Ibid, 
4, Egypt.—Six years ago, the pacha of Egypt, estab- 
a te at Baulag, a school for three hundred young people, 
ro. mead: mathematics, anatom and the hee uropean ie 
guages were taught, and French, English and Italian books 
were translated into Turk and Arabic, and a press, attached 
to the establishment, multiplied the copies 
The Vice Roy has recently founded an institution of the 
same kind on a larger scale. The school on the farm of Ibra- 
