SOCIETY FOR EXPERIMENTAL BIOLOGY AND MEDICINE A meeting of the Peiping Branch of the Society was held in the Peiping Union Medical College on Thursday, April 28, 1932, at 5 P.M. when the following papers were presented: 1. Note on the loss of anti-rachitic property from tissue of animals experimentally rendered rachitic. H.C. Hou 2. Combined effect of ephedrine and atropine on complete heart block. S. N. Cheer, C. L. Tung, C. W. Bien 3. Effect of acidosis and alkalosis on the total base, carbon dioxide, and chloride contents of muscle. En-fu Yang and Hsien Wu 4. A comparative study of various typhoid O antigens. D.H. Wong and