316 



SCIENCE. 



[N. S. Vol. XVII. No. 425. 



4. Chemical industries of organic products, 

 (a) Organic preparations including tar 



products; presiding officer, Professor Dr. H. 

 Wichelhaus, Berlin, N. W., 40, Grosse Quer- 

 allee, 1. 



(h) Dyes and their application; presiding 

 officer. Dr. Lehne, Grunewald, Trabnerstr. 9. 



5. Sugar industry; presiding officer. Pro- 

 fessor Dr. Herzfeld, Grunewald, Gillstr. 12. 



6. Permentation industries and starch man- 

 ufacture; presiding officer. Professor Dr. H. 

 Delbruck, Berlin W. 15, Fasanenstr. 44. 



7. Agricultural chemistry; presiding officer. 

 Professor Dr. Wagner, Darmstadt. 



8. Hygiene, medical and pharmaceutical 

 chemistry, foods; presiding officer. Dr. E. A. 

 Merck, Darmstadt. 



9. Photo-chemistry; presiding officer. Pro- 

 fessor Dr. A. Miethe, Charlottenburg, Kantstr. 

 42. 



10. Electro-chemistry and physical chem- 

 istry; presiding officer. Dr. H. T. Bottinger, 

 Elberfeld. 



11. Judicial and economic questions asso- 

 ciated with chemical industries; presiding 

 officer. Dr. G. A. Martius, Berlin, W. 9, 

 Vossstr. 12. 



These sections have been formed and have 

 held sessions in which all matters placed be- 

 fore them have been discussed. Each section 

 will submit certain questions of general and 

 international importance for which referees 

 and coreferees have been appointed and whose 

 treatment will include a discussion as well 

 as an eventual resolution which will be placed 

 before the congress in its final general session. 

 Furthermore, each section has already re- 

 ceived a number of papers from scientists 

 both local and foreign. The three general 

 sessions will include the official opening and 

 closing addresses, and a number of detailed 

 lectures by prominent representatives of the 

 sciences and industries of different countries. 



A series of especially important questions 

 in the field of analytical chemistry is now 

 under consideration by a special international 

 commission. 



A separate exhibit of apparatus and prep- 

 arations will not be held by the congress. 

 It is, however, certain that the members will 



have numerous opportunities to become _ ac- 

 quainted with improvements in the various 

 provinces of chemistry. Lectures with dem- 

 onstrations will be allowed in the sessions of 

 the individual sections. Both the general 

 section sessions will be held in the hall of the 

 Reichstag. Only section 10, electro-chemistry 

 and physical chemistry, will, on account of 

 the experiments connected with the addresses, 

 hold its sessions in the auditorium of the 

 Physical Institute. 



A local committee has been formed, of 

 which Dr. J. F. Holtz is chairman. An ex- 

 tensive program of entertainments has been 

 prepared. An informal meeting at some suit- 

 able place has been planned for the evening 

 of June 2, after the meeting in the hall of 

 the Eeichstag. A banquet and a coromers 

 will be held during the week. The city of 

 Berlin will give a festival in honor of the 

 members of the congress. A performance at 

 the opera house and a garden festival are also 

 planned. An excursion to various points of 

 interest in the vicinity of Berlin will close 

 the week. 



Invitations to the congress, which contain 

 all details of interest to those who will par- 

 ticipate, will be sent during January to the 

 addresses collected during the last two years, 

 from all countries of the world. About 50,- 

 000 copies will be distributed. 



Communications and inquiries concerning 

 the congress should be addressed to the bu- 

 reau, Charlottenburg, Marchstrasse, 21. 



Since the publication of the first list of the 

 American committee, the following changes 

 have been made: 



M. E. Jaffa, of the University of California, 

 present address Middletown, Conn., has been 

 appointed chairman of section 8, in place of 

 Dr. W. O. Atwater, and Dr. Leo Baekeland, 

 Snug Eock, Yonkers, N. T., chairman of 

 section 9, in place of Dr. L. H. Friedburg. 



Word has been received from Dr. Pulver- 

 macher that circulars of information, etc., 

 have been sent to the chairman of the Ameri- 

 can committee for distribution to interested 

 American chemists. Already a list of con- 

 siderable magnitude of the names of such 



