260 GARRISON, LEYNES, AND LLAMAS. 



Table 3. — Age distribution of infections — Continued. 



Age (years). 



Oxyuris. 



Amoeba. 



Ciliates. 



Flagellates. 



Encysted 

 protozoa. 



Total in- 

 fections. 



Nnm- 

 ber. 



Per 



cent. 



Num- 

 ber. 





 2 

 3 

 

 9 

 7 

 6 



Per 

 cent. 



Num- 

 ber. 



Per 

 cent. 



Num- 

 ber. 



Per 

 cent. 



Num- 

 ber. 



Per 

 cent. 



Num- 

 ber. 



Per 

 cent. 



Under 2 



1 

 1 

 1 

 

 1 

 

 



].4 

 1.0 

 0.8 



0.4 



2.0 

 2.4 



4.0 

 2.8 



4.4 





 

 



1 

 

 1 

 



1.9 

 0.4 



3 



8 

 7 

 4 



10 

 10 

 8 



4.1 



8.0 

 5.5 

 7.5 

 4.4 

 4.0 

 5.8 





 1 

 1 

 

 2 

 1 

 1 



1.0 

 0.8 



0.9 

 0.4 



7 



65 

 177 

 244 

 110 

 431 

 469 

 258 



89.0 

 177.0 

 192.1 

 207. 5 

 189.9 

 187.6 

 18R 3 



2 to 4 



5 to 9 — 



10 to 14 



15 to 29 



30 to 49 



50 and over... 



Under 15 







3 



1 



0.8 

 0.2 



5 

 22 



1.4 

 3.G 



1 

 1 



0.3 

 0.2 



22 

 28 



6.2 

 4.6 



2 

 4 



0.6 

 0.7 



59C 

 1. 158 



168.8 

 188.6 



15 and over 









Table 4. — Age distribution of infections, males. 



Age (years). 



Total 

 number 



Total 

 infected. 



Ascaris. 



Trich 



uris. 



Hook- 

 worms. 



Strongy- 

 loides. 



e.xam- 

 ined. 



Num- 

 ber. 



Per 

 cent. 



Num- 

 ber. 



Per 



cent. 



Num- 

 ber. 



Per 



cent. 



27.0 

 77.4 

 83.9 

 78.9 

 76.7 

 80.0 

 80.0 



Num- 

 ber. 



Per 

 cent. 



Num- 

 ber. 



Per 

 cent. 



Under 2 



37 

 53 

 .56 

 19 

 120 

 120 

 71 



21 

 51 

 56 

 19 

 117 

 118 

 71 



56.8 

 96.2 

 100.0 

 100.0 

 97.5 

 98.3 

 100. 



17 

 44 

 .54 

 19 

 100 

 92 

 55 



45.9 

 83.0 

 98.8 

 100.0 

 83.3 

 76.7 

 77.5 



10 

 41 

 47 

 15 

 92 

 96 

 57 





 1 

 3 

 5 



28 

 30 

 13 



1.9 



5.4 

 26.3 

 23.3 

 25.0 

 18.4 









2 to 4 



11 1.9 1 



5 to 9 



10 to 14 





 

 1 



0.8 



15 to 29 . 



30 to 49 



1 J 0-8 1 



.50 and over . 



2 



2.8 



Under 15 



15 and over 



165 

 311 



147 

 306 



89.1 

 98.4 



134 

 247 



8L2 

 79.4 



113 

 245 



08.5 

 78.8 



9 



71 



5.5 

 22.8 



1 

 4 



0.6 

 1.3 





Age (years). 



Oxyuris. 



Amoeba. 



Ciliates. 



Flagellates. 



Encysted 

 protozoa. 



Total 

 infections. 



Num- 

 ber. 



Per 

 cent. 



Num 

 ber. 



- Per 



cent. 



Num- 

 ber. 



Per 

 cent. 



Num- 

 ber. 



Per 

 cent. 



Num- 

 ber. 



Per 

 cent. 



Num- 

 ber. 



Per 

 cent. 



Under 2 . 





 

 

 

 1 

 

 







 1 



1.9 

 .3.3 





 

 



1 







i « 



5.3 



1 

 

 4 

 



: 



6 



2.7 



1.7 



3.3 

 3.3 



8.5 





 

 

 

 2 

 1 

 



1.7 

 0.8 



28 

 88 

 108 

 40 

 232 

 228 

 137 



7.5.7 

 IGG. 

 192. 8 

 210. 5 

 193.3 

 190.0 

 192.9 



2 to 4 . 





5 to 9 







 

 4 



10 to 14 





1 15 to 29 



0.8 



1 30 to 49 



4 3.3 

 4 5. 6 



] 50 and over 





Under 15 



15 and over 







 1 





1 0.6 

 12 3.9 



1 ^ 



0.6 



5 

 14 



3.0 



4.5 



3 



0.9 



264 

 597 



160.0 

 192.0 



0.3 











1 













