31 A LABIA AND MOSQUITOES 57 



demanded than is offered by these two experiments, but 

 it will be interesting^' to American readers to give the re- 

 sults of some American work. 



Dr. W. N. Berkeley, in the Medical Bccord of January 

 2(5, 1901, g-ives a most interesting- account of a malarial 

 outbreak in a small town near New York City during the 

 summer of 1900. Around a large pond in the vicinity of 

 the town four or five fresh cases had recently developed 

 in August. The first case was that of a coachman Avho 

 had caught malaria elsewhere and had relapsed. From 

 his quarters in a long row of stables on one side of the 

 pond the infection had passed along to other stablemen 

 and servants on the same side, to the distance of a quarter 

 of a mile from the original site, and a quarter of a mile in 

 another direction across the pond one other case appeared 

 in a small child. Dr. Berkeley went to the town and dis- 

 covered that Anoplieles inaculipennis was fairly abun- 

 dant in every bedroom in that area in which proi:)er search 

 was made. The breeding-places seemed to be segregated 

 pools at the end of the pond (the ]iond itself contained 

 fish) and post-holes and excavations. These last were 

 numerous, as many buildings were going- up. The fol- 

 lowing- jjractical measures were adopted: (1) Extermina- 

 tion of all the Anopheles found in houses by a party of 

 men sent out for the purpose, and this was followed by a 

 systematic introduction of screens in windows and doors; 

 (2) Filliug in of the smaller breeding-places and the 

 drainage of the pond ; (3) Tlie seclusion of every mala- 

 rious patient by netting and otherwise from the bite of 



