256 _ Setentific Intelligence. 
Hy he, SUIENTIFIC INTELLIGENCE. 
I. CuEemistry AND Puysics. 
the Preparation of Metacetonic Acid ; Dr. F. Kenxer, 
1. On by 
Chem. Gazette, May Ist, from Liebig’s An nalen, Feb., 18. 
quantity of wheat paste is mixed with i ee of water at 122°- 140° 
pine mass aakine The lime ag is converted into a soda salt, be 
. athe acid separated by sulphuric acid, is found to be a mixture of meta- 
~ } cetonic with acetic acid. ese are separated by saturating a portion 
- with carbonate: of scales adding the remainder and distilling off the me- 
= pine inait acid, gee by this process is readily obtained in large er) 
he 
. On the “Amie Compounds of Tungsten ; by Prof. waghae (Chem. 
bo “Grate May eee a leat eres 1850. )--Whe n dry am- 
oa apa yielding yellow tungstic acid. Heated to white- 
0 crucible, ‘itleaves metallic ranges: and a simi- 
ned in a current of hydrogen gas at a w ted heat, 
melting point of silver sae! is 0 
d.. Itis of a violet brown ee and under 
