MALABIA A AW 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 tlie Bledlad Record of January 

 26, 1901, gives a most interesting- acconnt 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 who 

 had caught malaria elsewhere and had relapsed. From 

 his quarters in a long row of stables on (me side of the 

 pond the infection had passed along to other stal)lemen 

 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 Aiiopheles macul'qyennis \vas fairl}^ abun- 

 dant in every bedroom in that area in which proper search 

 was made. The breeding-places seemed to be segregated 

 pools at the end of the pond (the ]H)nd itself contained 

 fish) and i^ost-holes and excavations. These last were 

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

 lowing practical measures were adopted: (1) Extermina- 

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

 men sent out for the puri^ose, and this was followed b}^ a 

 systematic introduction of screens in windows and doors ; 

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

 drainage of the ])<)nd ; (3) The seclusion of every mala- 

 rious patient by netting and otherwise from the bite of 



