—— the Te of Chemical Attraction. 235 
satncion ‘to return. In the mean tim , we may remark that 
e influence of quantity of matter in modifying the force of 
chemical attraction, in some particular cases, is universally 
mitted. 
1. In the case of solution. It is well oat and acknowl- 
edged, that a given weight of any salt thrown into so much 
water as is barely sufficient to effect its wohatiots, will not >etlle 
appear as poem as when the quantity of water is cise 
bi 
. ser te those cases where an element A. enters into combi- 
nation with another element B, in two, three or more differ- 
ent proportions; each additional dose of A, appears to op- 
pose a feebler resistance to any force that may be employed 
’ to separate it from B. A familiar example is furnished by 
the black oxide of manganese, which from a tr core is con- 
verted into a deutoxide, by the application of a low red heat, 
whilst no elevation of temperature to which it pa be sub- 
jected, pre a perfect decomposition and the separation of 
all the 
—See also, Davy’s Hlemeals of Chem. Philo- 
Turner’s Chemistry, 1p StS y’ ont 
py. i ig oe 8—18. Paris’s Med 237. Ure’s 
Dietary, srclon Brande has re en this aes while he has 
