482 PHAGOCYTOSIS OF SOLID PARTICLES. II 



3. There is almost no phagocytosis of carbon in absence of serum 

 or in heated serum. 



4. The clumping of unwashed leucocytes is accUerated by serum 

 and by the ingestion of carbon. 



5. The available evidence indicates that the phagocytosis of bac- 

 teria does not follow the law for a monomolecular reaction, possibly 

 because of the toxic effect upon the leucocytes of bacterial extracts. 



BIBLIOGRAPHY. 



1. Fenn, W. 0., /. Gen. Physiol., 1920-21, iii, 439. 



2. Cude, H. E., and Hulett, G. A., /. Am. Chem. Soc, 1920, xlii, 391. 



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



4. Ledingham, J. C. G., /. Hyg., 1912, xii, 320. 



5. Hamburger, H. J., in Abderhalden, E., Handbuch der Biochemischen arbeits- 



methoden, Berlin, 1919, ix, 1. 



6. Porges, 0., Z. Immunitdtsforsch., Orig., 1909, ii, 4. 



7. Ouweleen, J., Arch. ges. Physiol., 1917, clxix, 129. 



8. Hamburger, H. J., Physikalisch-chemische Untersuchungen iiber Phagozyten. 



Ihre Bedeutung von allgemein biologischem und pathologischem Gesichts- 

 punkt, Wiesbaden, 1912. 



9. Kite, G. L., and Wherry, W. B., /. Infect. Dis., 1915, xvi, 109. 



10. Neufeld, F., and Rimpau, W., Z. Hyg. u. Infectionskrankh., 1905. li, 283. 



