CONTENTS. 
Page. 
Preface and acknowledgments_ v 
The cause of yellow fever_ 49 
The blood in yellow fever___ 52 
The period of incubation of yellow fever_ __ 53 
Resulting from mosquito bites (Table 1)_ 54 
Resulting from blood inoculations (Table 2)_ 57 
The filtration of yellow fever blood_ 58 
Yellow fever produced by the bites of mosquitoes_ 60 
Yellow fever produced by the inoculation of blood serum_ 63 
Remarks on filtration experiments with yellow fever blood_ 67 
Testing of filters with objects of “ ultramicroscopic ” size_ 68 
The filtration of certain viruses__ 70 
Fomites_ 75 
The filtration of malarial blood. _ __ 75 
Estivo-autumnal fever_ 78 
Tertian fever ..._ 85 
Miscellaneous observations on mosquitoes_ 92 
Mosquitoes may bite cadavers_ 93 
Longevity__ 93 
Ovipositing_ 93 
Size of screening_ 95 
Disinfection experiments_ 97 
Summary and conclusions_ 99 
(m) 
