470 
CONTENTS. 
PART II. 
I. A REVIEW OF THE LITERATURE RELATING TO THE SEASONAL PREVA- 
PAGE 
LENCE OF TYPHOID FEVER 
521 
11. STATISTICAL STUDIES BY THE AUTHORS ON SEASONAL VARIATIONS 
IN TEMPERATURE, AND IN THE PREVALENCE OF TYPHOID FEVER 
IN VARIOUS COUNTRIES 
\ 
37 
III. INTERPRETATION OF THE STATISTICAL RESULTS 567 
IV. CONCLUSION OF THE AUTHORS THAT THE SEASONAL PREVALENCE OF 
TYPHOID FEVER DEPENDS MAINLY UPON SEASONAL TEMPERATURE 
5G9 
PART III. 
BIBLIOGRAPHY 
573 
A. On Disease attributed to Polluted Ice and Ice-cream 573 
B. On the Bacteriology of Natural Ice, Snow, and Hail, and of Ice-cream . . 
C. On the Effect of Freezing and other Low Temperatures upon Bacteria . . 
573 
574 
. . 576 
D. On Quantitative Studies of the Destruction of Bacteria m Freezing . 
E. On the Seasonal Prevalence of Typhoid Fever and its Relation to Seasonal 
TeMPERATLUE gyg 
