106 J. L. Kreider — Behavior of Typical Hydrous Bromides. 



for hydrous aluminum bromide suggests the observed impossi- 

 bility of evolving water without simultaneous loss of hydro- 

 gen bromide, the salt tending on continued heating to go over 

 to the oxide. With a salt showing this constitution the natural 

 effect of the concentration of hydrogen bromide in the system 

 would be to retard the dehydration of the salt, as was observed. 



So it appears that the phenomena of dehydration of the 

 hydrous bromides under discussion admit of explanation upon 

 Cushman's hypothesis of the molecular attachment of water 

 within and without the complex. 



The author is greatly indebted to Prof. F. A. Gooch for 

 advice and assistance throughout this work. 



