THE STRUCTURE OF BIOTIN.

The Structure of Biotin: DR. VINCENT DU VIGNEAUD 455 Special Articles: Pathway of Invasion in a Cynomolgus Monkey The Mycoflora of Bermuda: DR. FRED J. SEAVER ....... 462 After Oral Application of Poliomyelitis Virus: DR. HAROLD K. FABER and ROSALIE J. SILVERBERG. A Scientific Events: Virus Obtained from a Pneumonia of Cats and Its Possible Relation to the Cause of Atypical PneuDeaths and Memorials; The National Registry of monia in Man: DR. JAMES A. BAKER. Capillary Rare Chemicals; The Training of Workers for the Emboli as a Lethal Factor in Burns: DR. HERMAN War Industries; The Public Health Research InKABAT and MILTON LEVINE ...... .............. 473 stitute of the City of New York; Psychology and the War; The Yerkes Laboratories of Primate Scientific Apparatus and Laboratory Methods: Biology .................. 463 A Simple Method for Rapid Tube Feeding of Rats: DR. LouIs LEVIN. The Use of Creosote in MountScientific Notes and News.................... 466 ing Fleas and Other Arthropods on Slides: DR. IRVING FOX ....................................... 477 Discussion: