192 Papers of Biochemical Interest [March, 



mechanism of the Abderhalden reaction (p. 87). — D. H. Bergey: Do 

 bacteria produce pyrogenic poisons ? — E. C. L. Miller: How bacterial 

 vaccines act. — P. B. Hadley: Reciprocal relations of virulent and 

 avirulent cultures in active immunization. 

 Philadelphia, Pa. 



