﻿538 GARRISON. 



MATERIAL. 



The greater part of the material forming the basis of the jn'esent study 

 has been collected from native prisoners in Bilibid Prison, a large propor- 

 tion of whom were examined and treated in quarantine immediately upon 

 their arrival from various provinces scattered throughout the Islands. 

 Numerous other specimens have been received from patients in the 

 private practice of ph) r sicians and in the hospitals of Manila. 



The present reports deal simply with the identification of specimens 

 collected and they do not undertake to consider the proportion of persons 

 infected to those examined; therefore they can not properly be taken 

 as an index to the frequency of infection in the population. However, 

 considering that from 3,000 to 4,000 persons gathered from widely scat- 

 tered localities have been examined for animal parasites at Bilibid 

 during the current year, and that specimens have been received from 

 various classes and conditions of social life, it would seem fairly probable 

 that our Helminthological Collection at present contains representatives 

 of most of the species of the parasites of man which are generally prevalent 

 in the Islands, and furthermore that, with certain exceptions which will 

 be noted in the text of this and the following papers, the collection may 

 be accepted tentatively as a rough indication of the relative prevalence 

 of the different species. 2 



CESTODA. 



The relative infrequency of cestode infections compared to infection 

 with the common nematodes, and on the other hand the greater famil- 

 iarity with tapeworms and their relative innocuousness compared with 

 trematodes, are probably responsible for the fact that, while valuable 

 contributions have been made to the study of the Nematoda, Trema- 

 toda, and the Protozoa of the Philippines, the Cestoda have been almost 

 entirely neglected. 



So far as we have been able to discover, the following are the only 

 published references to cestode infections in the Philippines : 



Strong, 3 1901, reporting the results of 1,793 stool examinations and 386 

 necropsies, states that only two adult Twnia had been found, but that both 

 T. saginata and T. solium are present in the Islands, the former species being 

 most frequently seen in American troops, the latter occasionally occurring among 

 the natives. 



In the annual reports of the Superintendent of Government Laboratories of 

 the Philippine Bureau of Science for the years 1902 to 1905, inclusive, 4 in 



a I wish to acknowledge my indebtedness to Dr. Edwin C. Shattuck, resident 

 physician of Bilibid Prison, for numerous specimens placed at my disposal and 

 deposited in the Bureau of Science Helminthological Collection. 



3 Circulars on Tropical Diseases, Manila (1901), 1, 15. 



4 An. Rep. of the Superintendent of Government Laboratories, Report of the 

 Biological Laboratory, Manila (1902), 5G9; (1903), 413; (1904), 443; (1905), 

 357. 



