BIBLIOGRAPHY 281 



PARK, W. H., and WILLIAMS, A. W. 1905. A study of pneumococci : 

 a comparison between the pneumococci found in the throat 

 secretions of healthy persons living in both city and country 

 and those obtained from pneumonic exudates and diseased 

 mucous membranes. Journal of Experimental Medicine, VII, 

 403- 



PASQUALE, A. 1893. Vergleichende Untersuchungen iiber Strep- 

 tokokken. Beitrage zur pathologischen Anatomic und zur 

 allgemeinen Pathologic, XII, 433. 



*PASSET. 1885. Untersuchungen tiber die Aetiologie der eiteri- 

 gen Phlegmone des Menschen. Berlin. 1885. 



PEARSON, K. 1000. The Grammar of Science. London. 1900. 



PECKHAM, A. W. 1897. The Influence of Environment upon the 

 Biological Processes of the Various Members of the Colon 

 Group of Bacilli. Journal of Experimental Medicine, II, 549. 



PERKINS, R. G., and PAY, G. O. 1903. Streptococcus pyogenes in 

 Variola. Journal of Medical Research, X, 180. 



*PITFIELD, R. L. 1897. Queen's Microscopic Bulletin. Phila- 

 delphia. 1897. 



POYNTON, F. J. and PAINE, A. 1900. The Etiology of Rheu- 

 matic Fever. Lancet, 1900, II, 86 1. 



POYNTON, F. J. 1904. The Infective Nature of Rheumatic Fever. 

 British Medical Journal, 1904, I, 1117. 



PRESCOTT, S. C. 1006. The Occurrence of Organisms of Sanitary 

 Significance on Grains. Biological Studies by the pupils of 

 William Thompson Sedgwick. Boston. 1006, 208. 



PROSCHER. 1903. Ueber Antistaphyloccocenserum. Deutsche 



Medicinische Wochenschrift, XXIX, 195. 

 *QUETELET, A. 1846. Lettres . . . sur la theorie des probabili- 



tes, applique'e aux sciences morales et politiques. Bruxelles. 



1846. 



RICHARDSON, O. 1901. Pseudo-Pneumococci in lobar pneumonia. 

 Journal Boston Society of the Medical Sciences, V, 499. 



