COOPERATION 



My friends have generously contributed techniques written by them as 

 follows : 



G. Adolph Ackerman, Hinsman Hall, Ohio State University, Columbia 10, 

 Ohio, May 24, 1951. 

 Auer Bodies. 

 Paul M. Aggeler, University of California Medical Center, San Francisco 22, 

 California, November 15, 1951. 

 Blood Platelets. 

 Glenn H. Algire, U. S. Public Health Service, Bethesda Maryland, June 15, 

 1950. 

 Transparent Chamber Techniques. 

 James W. Bartholomew, Department of Bacteriology, University of Southern 

 California, Los Angeles 7, California, July 9, 1951. 

 Gram Stains Mechanism. 

 H. W. Beams, Department of Zoology, University of Iowa, Iowa City, Iowa, 

 September 27 1951. 

 Ultracentrifuges. 

 R. Bogoroch, Department of Anatomy, McGill University, Montreal, Canada, 

 September 12, 1951. 

 Radioautographic Technique (With C. P. Leblond). 

 L. R. Boling, Department of Anatomy, Washington University School of 

 Dentistry, St. Louis 10, Missouri, December 16, 1950. 

 Teeth Blood Vessels. 

 Teeth Decalcification. 

 Geoffrey Bourne, Department of Histology, London Hospital Medical School, 

 London, England, November 5, 1951. 

 Golgi Apparatus. 

 Mitochondria. 

 Marian Pfingsten Bryan (Mrs. WilhamT. K. Bryan), Department of Otolaryn- 

 gology, Washington University School of Medicine, St. Louis 10, Missouri, 

 September 20, 1951. 

 Ear Cell Smears. 

 Nasal Cell Smears. 

 E. J. Carey, Department of Anatomy, Marquette University School of Medi- 

 cine, Milwaukee, Wisconsin, 1942 (now deceased). 

 Carey's Method for Motor End Plates. 

 Christopher Carruthers, Division of Cancer Research, Washington Uni- 

 versity, St. Louis 10, Missouri, May 12, 1950. 

 Oxidation-Reduction Potential. 

 Vitamins. 

 Polarographic Technique. 



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