992 The Philippine Journal of Science 1915 
also found at other points near the camp. Anopheles rossii 
occurred in alge and in pools in the bed of the stream. A few 
larve of A. barbirostris were also found (Plate I, fig. 2). 
Mr. Austin informed us that a camp 6 kilometers beyond the 
river, away from any stream, remained malaria free. 
This epidemic shows clearly the relation between clear streams 
and malaria in the Philippine Islands. It is said that the people 
of this region refuse to settle on this river because of the severe 
type of malaria which prevails there. The stream is reputed by 
them to be haunted and is known as “Devil River.” 
In reviewing the data given in Table VI, little can be deduced 
with regard to distribution by provinces because no complete 
survey was made of any province, and because the great variety 
of topography in each province makes a partial survey incon- 
clusive. However, in the two provinces of Cebu and Laguna the 
number and variety of localities visited were considerable, and 
some comparison is possible. Cebu, a long narrow island of 
coral formation, is comparatively poorly watered. The interior 
is mountainous, and the large proportion of the population is 
found along the coast. The towns for the most part are but 
little above high tide. Permanent brooks and rivers are com- 
paratively few, and there seems to be less tendency here than 
in other parts of the Archipelago to locate towns immediately 
on the streams, possibly on account of floods. 
In September, 1914, Barber made a malarial survey of the 
province in company with Dr. A. Villalon, an assistant of Dr. 
Arlington Pond, district health officer of Cebu. On the east 
coast various localities from Oslob to Sogod, and on the west 
coast from Tuburan to Aloguinsan, were visited. Mosquito sur- 
veys were made and fever cases examined wherever they could 
be found. In locating fever cases we had the assistance of the 
local health officers. In addition, the parasite and spleen indexes 
were taken of school children in the towns of Bolhoon, Carcar, 
and Argao. The amount of malaria found was small. But few 
cases of malaria were found, and nearly all of these could be 
traced to recent residence in a construction camp in Tayabas 
Province, Luzon, where malaria is very prevalent and where 
many laborers recruited from Cebu are employed. Only three 
cases could be found (these in Pardo barrio near Bolhoon) which 
could not be traced to this source. 
Doctor Pond informed us that in ten years of experience 
in Cebu he has observed comparatively few cases of malaria 
indigenous in the province and that he has not seen one case of 
