508 



CHAMBERLAIN, BLOOMBERGH, AND KILBOURNE. 



with 12 per cent. Most of the men showed two varieties of parasites,, 

 many three, and a few harbored four kinds. 



As it was impracticable to treat these natives, we were unable to 

 determine the species of uncinaria present, but judging from experience 

 elsewhere in the Philippines it is probable that it was in most cases 

 Necator americanus. All of the tapeworm eggs appeared to be those of 

 Taiiia saginata except those from one man, whom we considered to be 

 infected with the Dipylidium caninum, but here again we were unable 

 to obtain the parasite to confirm the opinion based on the appearances of 

 the ova. 



Table I. — Oca found in the stools of 119 male Igorot laborers examined by the 

 Tropical Board at Bagnio, P. 1. 



Examinations and infections. 



Number. 



Per cent. 





119 

 110 







92.5 



Persons infected with — 



87 

 72 

 35 

 15 



73.0 

 60.0 



29.0 

 12.0 











209 



174.0 



1 





The total number of infections agrees closely with the findings at 

 Taytay, where 95.9 per cent of the 1,000 Filipinos examined were in- 

 fected. (3) 



While at Baguio. through the courtesy of Doctor Vincent, we were 

 permitted to study the records of stool examinations of Igorots at the 

 Civil Hospital for the last two and a half years and we have arranged 

 these data, for ease of reference, as shown in Table II. 



Table II. — Stool examination of 1S3 Igorots at Civil Hospital at Baguio, P. I., 

 July 1, 1907, to March 3, 1910. 



Persons infected with— 



Ascaris lumbricoides 



Trichocephalus dispar 



Agehylostomum 



Taenia solium 



Tsenia saginata 



Amceba 



Trichomonas 



Oxyuris vermicularis 



Strongyloides 



Distomum hepaticum 



Total number of infections — 

 Total number of persons examined. 



Number, fiscal 

 year — 



1908 1909 



Number 

 to March 

 3, 1910. 



Number. Percent. 



97 

 118 



Whole period. 



183 

 183 



26.3 

 29.0 

 29.0 

 2.7 

 2.4 

 6.6 

 0.6 

 2.2 

 0.6 

 0.6 



100.0 



