Section B.—1918.] [ BRITISH ASSOCIATION. 
Colloid Chemistry and its General and Industrial Applications.— 
Second Report of the Committee, consisting of Professor F. G. 
Donnan (Chairman), Professor W. C. McC. Lewis (Secretary), 
Dr. E. F. Armsrrone, Professor ApriaAN J. Brown, Dr. C. 
H. Descu, Mr. E. Harscuex, Professors H. R. Procrer 
and W. Ramspen, Mr. A. S. SHorrer, Dr. H. P. Stevens, 
and Mr. H. B. Stocks. 
INTRODUCTION. 
THE plan already adopted of arranging the subject-matter under 
two heads, viz. (1), classification according to scientific subject, and 
(2), classification according to industrial process and general applica- 
tion of colloid chemistry to other sciences, has been employed in the 
preparation of the Second Report. 
The subjects dealt with under the first head in the accompanying 
Report are :— 
1. Peptisation and Precipitation. 
2. Emulsions. 
3. The Liesegang Phenomenon. 
4, Electrical Endosmose, Part I. 
The subjects dealt with under the second head are :— 
. Electrical Endosmose, Part II. 
. Colloid Chemistry in the Textile Industries. 
. Colloids in Agriculture. 
. Sewage Purification. 
. Dairy Chemistry. 
. Colloid Chemistry in Physiology. 
. Administration of Colloids in Disease. 
The Committee has again to express its deep sense of obligation to 
the gentlemen who under somewhat difficult circumstances have 
compiled the various sections which make up tbe present Report. 
It is hoped that the very valuable material which has now been 
collected in the First and Second Reports will serve the purpose of 
emphasising the fundamental importance of colloid chemistry for 
operations and processes which, at first sight, appear to be wholly 
distinct, and at the same time will serve to co-ordinate such informa- 
tion and to render it available for the benefit of all who are engaged 
in operations in which colloid chemistry plays a part. — 
A number of subjects have not as yet been considered. It is 
hoped that these will be discussed in the Third Report. In this 
connection the Secretary (Muspratt Laboratory, University, 
SID OH 0909 
_ Liverpool) would be glad of suggestions from those engaged in 
chemical industry regarding subjects or problems met with in 
technical work which could be considered as coming within the 
scope of the Committee’s activities. It is felt that such co-operation, 
which at the present time would be particularly valuable, is not 
impossible. 
(20895.) Wt. 36589—540. 2750, I1/ly. D&S. GQ. A 
