464 PHAGOCYTOSIS OF SOLID PARTICLES. I 



4. The formula for the chances of coUision is also verified by varying 

 the speed of rotation of the tubes in which the phagocytic mixtures 

 are incubated. 



The advice and assistance of Doctor C. K. Drinker and Doctor 

 C. K. Reiman of this department are gratefully acknowledged. 



BIBLIOGRAPHY. 



1. Hamburger, H. J., Physikalisch-chemische, Untersuchungen uber Phagozyten. 



Ihre Bedeutung von allgemein biologischem und pathologischem Gesichts- 

 punkt, Wiesbaden, 1912. 



2. McKendrick, A. G., Sc. Prog. Twentieth Cent., 1913-14, viii, 497. 



3. Madsen, T., and Watabiki, T., Med. k. Vetens-akad. Nobelinst., 1919, v. 



4. Ostwald, W., and Luther, R., Hand- und Hilfsbuch zur Ausfuhrung physiko- 



chemischer Messungen, Leipsic, 2nd edition, 1902, 259. 



5. Dunstan, A. E., and Thole, F. B., Viscosity of liquids. Monographs on inor- 



ganic and physical chemistry, London, New York, Bombay, and Calcutta, 

 1914, 9. 



