﻿IX. B, 2 Sanitary Survey in Mindoro 165 



Amindan River. — Amindan River, a small creek southeast of 

 San Jose, was found infested with Myzomyia and Culex larvae 

 as shown in the map. 



Mangarin. — The village of Mangarin from the standpoint of 

 insanitary location could probably not be excelled anywhere in 

 the Philippine Islands. This is a well-laid-out town 300 years 

 old, with fairly clean streets and well-maintained fences, together 

 with houses somewhat above the average of construction and 

 cleanliness, set down in a tidal swamp. The effects of the 

 proximity of mosquito-breeding places are shown by the ap- 

 palling splenic index among the children of 98 per cent and an 

 ansemia among the adult population which was absolutely general. 



It is needless to state that malaria mosquitoes were found in 

 very great abundance in and around this place and that the only 

 possible solution of the malaria problem here would be to abandon 

 the place completely. 



This single village is an incubator where the germs of the 

 disease are maintained year after year to be sent out in ambulat- 

 ing cultures from which every anopheline that bites them can 

 draw an abundant supply of the organisms of pernicious malaria 

 for the infection of other persons. 



Santa Teresa. — Santa Teresa, situated on Lalaoigan sandspit, 

 about 10 kilometers from Mangarin wharf, and having about 

 150 inhabitants, is fairly free from malaria mosquitoes; but 

 outside of the towTi, along an ill-defined estero or swamp area, 

 were to be found breeding places of both Myzomyia rossii and 

 Culex ludloivii with limited numbers of larvae at the time of my 

 visit. 



This town seemed to be the most promising from the stand- 

 point of ease of sanitation of all the towns seen in this portion 

 of Mindoro. 



Toong. — About 13 kilometers from Mangarin wharf and 6 

 kilometers from the mouth of the Caguray River is situated the 

 barrio or rancheria of Toong belonging to the Recoleto Fathers 

 and used as headquarters for those laborers who herd the cattle 

 belonging to this order. The ground is generally high and fairly 

 well drained, but along the river banks are to be found breeding 

 places of Myzomyia in fair abundance. 



Children in Santa Teresa and in Toong, examined by Doctor 

 Musgrave, showed spleen enlargement indicative of chronic 

 malaria infection. 



Caguray. — Caguray, a small, well-laid-out, and fairly clean 

 town, is 4 kilometers from the mouth of the river of the same 



