BARBER ET AL.: MALARIA IN THE PHILIPPINES. ] [PHIL. JOURN. Scr., X, B, No. 3. 
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Fig. 1. A stream flowing through Bongabon, Nueva Ecija, a town with high malarial index. 

Fig. 2. Baliuag River, Nueva Ecija. Larve of Anopheles febrifer were found in the grass at 
the margin of the stream at the right. 
PLATE I. 
