Colloid Chemistry and its General and Industrial Applications. — 

 Third Report of the Committee consisting of Professor F. G. 

 DoNNAN {Chairman), Professor W. C. McC. Lewis {Secretary), 

 Dr. E. Ardern,* Dr. E. F. Armstrong, Professor W. M. 

 Bayliss and the late Professor A. J. Browk, Mr. W. Clayton,* 

 Dr. C. H. Desch, Mr.W. Harrison, IMr. E. Hatschek, Professors 

 H. R. Proctor and W. Ramsden, Dr. E. J. Russell, Mr. 

 A. B. Searle,* Dr. S. A. Shorter, Dr. H. P. Stevens, and 

 Mr. H. B. Stocks. 



Introduction. 



The plan already adopted in the two previous Reports of arranging 

 the subject matter under two heads, viz. : (1) classification according 

 to scientific subject; and (2) classification according to industrial 

 process, has been employed in the present ReiDort. 



The subjects dealt with under the first head in the accompanying 

 Report are : — 



1. Colloid Chemistry of Soap, Part I.— Solutions. By 



Professor J. W. McBain. 



2. Ultramicroscopy. By G. King, M.Sc, F.I.C. 



3. Solubility or Gases in Colloidal Solutions. By G. King, 



M.Sc, F.I.C. 



4. Electrical Charge on Colloids. By J. A. Wilson. 



5. Imbibition of Gels, Part I. By J. A. Wilson. 



The subjects dealt with under the second head are : — 



6. Imbibition of Gels, Part II. — Industrial Applications. 



By J. A. Wilson. 



7. Colloid Problems in Bread-Making. By R. ^Vhymper. 



8. Colloid Chemistry in Photography. By Dr. R. E. Slade. 



9. Collodion in Photography. By H. W. Greenwood. 



10. Cellulose Esters, By Foster Sproxton, B.Sc, F.I.C. 



11. Colloid Chemistry of Petroleum. By Dr. A. E. Dunstan. 



12. Asphalt. By Clifford Richardson, M.Am.Soc, C.E., F.C.S. 



13. Varnishes, Paints, and Pigments. By Dr. R. S. Morrell. 



14. Clays and Clay Products. By A. B. Searle. 



The Committee has again to express its sense of obligation to the 

 authors of the sections enumerated above. 



A number of subjects yet remain to be considered. It is hoped 

 that the'se will be dealt with in the Fourth Report. 



W. C. McC. Lewis. 



* Names so marked are those of Assessors or Consultative Members, not 

 being Members of the Association. 



X (37)11454 Wt 6755—415/763 4000 10/20 E & S ^^-^JlgfJ wTT"^ 



L sMr# 



I 



