Chemistry and Physics. 401 
i. weight of water, On evaporating the solution on a sand bath, 
€ sulphate was deposited in the form of scales, which under the 
bl 
° 3 > i 
be a basic salt having the composition (TeO, . It is decom- 
G. F. B. 
he On the Atomic Weight and on certain Compounds of 
ee has published an abstract of his recent re- 
es on samarium. e finds that the best process for its 
Separation consists in fractionally precipitating the mixed nitrates 
d a dilute solution of ammonia. 
ee hat thus prepared it has always a yellow color from 
€ presence of terbia, from which it may be freed by repeated 
Precipitations with ammonia. e fractions are nearly 
eg The atomic weight was determined from the weight of 
Sulphate yielded by a known weight of the oxide. Six determi- 
ultra red. The metal has not yet been isolated. The oxide 
mn,0, is a nearly white powder of density 8347 which dissolves 
*asily in acids. Its salts have a yellow color like sulphur or a 
a are easily precipitated by oxalic acid, the oxalate being 
esi insoluble. Samarium is determined either as oxide, by 
Sapte the oxalate or hydrate, or as sulphate which may be 
eated to a dull red.— Bull. Soc. Ch., U, xliii, 1€2, Feb., 1885. 
F 
@. F. 
a. On the Purification of Methyl Alcohol.—The question of 
he, production of iodoform by the action of iodine on methyl 
cohol in presence of alkali hydrates has been an open one owing 
