272 



RISSLER AND GOMEZ. 



Monads were found rather uniformly distributed in the cases, but 

 ciliates were not encountered in the Cagayan Valley. 



The results of these investigations are given in Tables I, II and III. 



Table I. — Santa Isabel. — January 20 to February S, 1910. 



Examinations and infections. 



Males. 



Females. ■ 



Children. 



Total. 



No. 



Percent. 



No. 



Percent. 



No. 



Percent. 



No. 



Percent. 





274 





238 





2S8 





802 















231 

 43 



84.46 

 15.54 



201 

 37 



84.45 

 15.55 



258 

 30 



S9.56 

 10.44 



692 



110 



86.28 

 13.72 





Cases infected with— 



16f. 



140 

 14 

 3 

 6 

 1 

 8 



60.58 



51.09 



5.10 



1.09 



2.18 

 0.36 

 2.92 



122 

 127 

 26 

 2 

 2 

 

 3 



51.26 

 53.31 

 10.92 



0.88 



0.88 







1 . 211 



76 

 219 



10 

 5 

 4 

 5 

 



t 



26. 42 

 70.58 

 3.43 

 1.73 

 1.38 

 1.73 

 



364 



486 

 50 

 10 

 12 

 6 

 11 



45.38 



60.59 



6.23 



1.24 



1.49 

 0.74 

 1.37 

















