Aveust 16, 1918] 
creasing this production until the war has been 
won by the United States and its Allies. 
The managers report that the amount of 
floor space already engaged is greater than last 
year, that the exhibits will be much more at- 
tractive, and that a movement is under way 
to show all exhibits of machinery in operation 
under actual working conditions as they would 
be found in the plants. 
Some sections of the south are again send- 
ing exhibits, and Canada is taking the oppor- 
tunity of presenting the materials it has avail- 
able for development by the chemist and fi- 
nancier. A section for the Glass and Ceramic 
Industry has been added with which the Amer- 
ican Ceramic Society is cooperating. 
The program for the Exposition is in active 
preparation. Opening addresses will be made 
by Dr. Charles H. Herty, chairman of the ad- 
visory committee, and Dr. G. W. Thompson, 
president of the American Institute of Chem- 
ical Engineers. There will be a series of sym- 
posiums on “The Development of Chemical 
Industries in the United States, notably since 
July, 1914.” This will embrace the period 
since the beginning of the European War, 
which, by removing the source of supply for 
our domestic industries, inspired the develop- 
ment of our own chemical industries which, 
now that we ourselves have entered the war, 
are proving so effective. The subjects to be 
discussed are Potash Development, Chemical 
Engineering, Acids, Industrial Organic Chem- 
istry, the Ceramic Industries and the Metal 
Industries Among the speakers will be: 
C. A. Higgins, ‘‘Recovery of potash from kelp.’’ 
Linn Bradley, ‘‘Recovery of potash from cement 
dust and other sources by electrical precipita- 
tion.’’ 
A. Hough, ‘‘Chemical engineering in explosives; 
T. N. T., T. N. A., picrie acid and nitrobenzol.’’ 
E, J. Pranke, ‘‘Development of nitric acid manu- 
facture.’’ 
8. P. Sadtler, ‘‘Development of industrial organic 
chemistry.’ 
George H. Tomlinson, ‘‘ Wood as a source of ethyl 
alcohol.’’ 
C. A. Higgins, ‘‘Kelp as a source of organic sol- 
vents. ’? fi 
Alcan Hirsch, ‘‘Pyrophorie alloys.’’ 
SCIENCE 
159 
Joseph W. Richards, ‘‘The ferro-alloys of silicon, 
tungsten, uraniwtm, vanadium, molybenum, ti- 
tanium.’’ 
Theodore Swann, ‘‘Ferromanganese.’’ 
Leonard Waldo, ‘‘The development of the mag- 
nesium industry.’ 
The American Ceramic Society, which will 
hold its meeting at the Exposition on Thurs- 
day afternoon, September 26, has already upon 
its program: 
A, V. Bleininger, ‘‘Recent developments in the 
ceramic industries.’’ 
L. E. Barringer, ‘‘Manufacture of electrical por- 
celain’’ (illustrated). 
H. Ries, ‘‘ American clays.’’ 
F. A. Whitaker, ‘‘Manufacture of stoneware’’ 
(illustrated). 
Following this meeting a series of motion 
pictures of the ceramic industries will be 
shown. 
The motion picture program, in the arrange- 
ment of which the Bureau of Commercial Eco- 
nomics is again cooperating, carries forward 
the idea of the symposiums, the pictures ap- 
propriate to a subject being shown on the 
same day as the symposium on that subject is 
held. 
NUTRITION OFFICERS STATIONED IN THE 
CAMPS? 
Nurrition officers are to be stationed in 
every National Army cantonment and every 
National Guard camp, as well as in every 
camp where 10,000 or more soldiers are in 
training. These officers are food specialists 
who before they joined the army as members 
of the division of food and nutrition of the 
Medical Department were connected with col- 
leges and public bodies as_ physiologists, 
chemists, economists, food inspectors and ex- 
perts in other specialized work relating to 
food. 
Since October of last year the division of 
food and nutrition has been making surveys of 
food conditions in the camps. Groups of offi- 
cers have gone from camp to camp, studied 
the food served, how it was inspected, stored, 
and prepared, and have made recommenda- 
1Statement from the office of the Surgeon 
General authorized by the War Department. 
