278
ABSTRACTS
:
BULLETIN DE LA SOCIhTk CIIIMIQUE DE PARIS.
On the R d a t l o n Existing between tJw Chemical Compos& tlon and the Mechrcnical Properties of Steds, V. DEBHAYES,
Eng. at Terre-Noire.-Kot suitable for ahtraction. An elaborate article, giving complete details iri regard to this important subject. Idrnl,
>YO,v ; .
Sote upon a Recent Work of 111. B. Aronheinc, E.' SCRUTZENBERGER.
On, tJbe ChJorostannatea of the R a r e Eaiths, P. T. CLEVE.The following have been prepared : 2La,CI,, 56nC1,, 45H,O. Ce,Cl,, 2SnCI,, 16H,O. Di,CI,, ZSnCI,, 21€I,O. Y&l,, 2SnCI,, 16H,O. The composition of the chlorostannates is thus shown to be perfectly analogous to that of the chloroplaeinates.
ReseurcJhes upon Sulphatee, A. ETARD.-MOS~ mixed sesquisulphates can be represented by the general formula M,( SO,),N,. Only one salt of the type, 2[M,(S04),]N,(S0,),, has been observed. According to the theory of the author, by heat the acid salt changes a8 follows :
Neutral Salt.
First acid salt.
Second acid salt. Some of the salts made are : Acid double sulphate of iron and alumina[A~*(SO,)8Fe,SO,H,]. Acid sesquisulphate of iron and chromium[Cr*(SO,)6Fe, SO,H*]. Sesquisuiphate of aluniinum and manganese2[Al,(SO,),]Mn,(SO,),.
