300 The Society of American Bacteriologists [Jan. 



skin test in tuberculosis. — F. Gurd: On the relationship of allergic 

 and opsonic reactions. — L. F. Rettger: A comparative study of the 

 intestinal flora of animals provided with normal and experimental 

 diets. 



Research. An announcement was made at the meeting that 

 the Division of Carbohydrate Investigations of the Bureau of Chem- 

 istry, U. S. Dep't of Agriculture, has perfected improved methods 

 for preparing in a high State of purity several of the carbohydrates 

 used for the identification and Classification of many bacteria. The 

 Bureau has arranged to supply small quantities of these carbohy- 

 drates to bacteriologists who are engaged in public-health work in 

 connection with the enforcement of food laws. The Division also 

 offers to collaborate with members of the Society who would like 

 to obtain small quantities of these sugars for use in their biological 

 work, particularly for use in research. This announcement was 

 welcomed as one of great importance to bacteriologists generally. 



Biochemical Lahoratory of Columbia University, 

 College of Physicians and Stirgeons, New York 



