172 Scientific Intelligence . — Chemistry . 
the east and west direction. $. When it remains in the mag- 
o 
netic meridian, the silver-tree rises higher in the northern than 
in the southern leg. 3. The crystals are more acicular, and 
have a higher metallic lustre, in the northern than in the south- 
ern leg of the syphon. The same experiment has been success- 
fully repeated by Dobereiner and Schweigger, from whose 
Journal the above details are extracted. 
12. Sulphur in Vegetables. — Sulphur, in combination with dif- 
ferent bases, occurs in wheat, barley, rye, oats, peas, beans, 
maize, millet, rice, and salop. Gum-arabic also contains traces 
of ammonia and sulphur. 
13. On supposed Hydrates of Sulphur It would appear, 
from some experiments of Professor Bischof of Bonn, in oppo- 
sition to the statements of other chemists, that sulphur does not 
occur in the state of hydrate, when poured in a melted state 
into water, when precipitated from sulphuret of soda, or in 
crystals of sulphur. Here Bischof makes a distinction between 
water of crystallisation and water in true hydrates ; the former 
parts readily from the body containing it under the common 
pressure of the atmosphere, and therefore more readily under 
the [air-pump ; whereas the water of true hydrates does not 
escape under the air-pump, and often requires the assistance of 
considerable heat to separate it. 
14- View of the Atomic System, for the Use of ‘ Students ; by 
E. Turner, M. D. — This interesting little work contains a po- 
pular and luminous view of the Atomic System, and cannot fail 
to prove acceptable, not only to the student, but also, to the 
general reader, 
15. Lithia in Spring Water. — Berzelius has detected, in the 
Eranzbad and Marienbad waters of Bohemia, and in the hot 
springs of Carlsbad, carbonate of lithia. It is probable that 
the same substance will be found in the waters of the ocean. 
The ocean, and the atmosphere, it may be conjectured, will be 
found to contain minute portions of all the principal materials 
that enter into the composition of the solid mass of the globe, 
an inference founded on obvious geological and meteorological 
data. 
