86 WILLETS. 



Table VIII. — Age distribution of infections {males) 



Age (years). 



Num 



- 



Infected. 



Ascaris. 



Hookworm. 



Trichuris. 



exam- 

 ined. 



Num- 

 ber. 



Per 



cent. 



Num- 

 ber. 



Per 

 cent. 



Num- 

 ber. 



Per 

 cent. 



Num- 

 ber. 



1 

 Per 

 cent. 



Under 1 



9 



48 



97 



81 



84 



86 



86 



201 



248 



586 



515 



249 



940 



1,350 



2 



21 



76 



71 



71 



81 



75 



180 



231 



535 



446 



210 



808 



1,191 



22.22 

 43.75 

 78.35 

 87.65 

 84.52 

 94.19 

 87.21 

 89.55 

 93.15 

 91.30 

 86.60 

 84.34 

 85. 95 

 88.22 



2 



20 



72 



66 



66 



73 



65 



139 



164 



341 



239 



102 



667 



682 



22.22 

 41.67 

 74.23 

 81.48 

 78.57 

 84.88 

 75.58 

 69.15 

 66.15 

 58.19 

 46.41 

 40.96 

 70.96 

 50.52 



1 

 4 



15 



18 



25 



27 



33 



122 



176 



459 



374 



178 



421 



1,011 



11.11 



8.33 



15.46 



22.22 



29.76 



31.40 



38.37 



60.70 



70.97 



78.33 



^ 72. 62 



' 71. 49 



44.79 



74.89 











4 



2 



2 



7 



5 



17 



26 



54 



39 



23 



63 



116 



4.12 

 2.47 

 2.38 

 8.14 

 5.81 

 8.46 

 10.48 

 9.21 

 7.57 

 9.24 

 6.70 

 8.59 



1 _ 



2 _ 



3 . 



4 



5 



6 



7 to 9 



10 to 14 



15 to 30 



31 to 50 . - 



Over 50 



Under 15 - 



15 and over 





Age (years). 



Oxyuris. 



Txnia. 



Hymenolepis. 



Strongy- 

 loides. 



Total infections. 



Num- 

 ber. 



Per 

 cent. 



Num- 

 ber. 



Per 

 cent. 



Num- 

 ber. 



Per 

 cent. 



Num- 

 ber. 



Per 

 cent. 



Num- 

 ber. 



Per 

 cent. 



Under 1 





 

 3 

 

 3 

 1 

 2 

 2 

 2 

 3 

 5 

 2 

 13 

 10 





























1 







2 



12 



14 



6 



3 



S2 







 

 

 

 

 

 

 1 

 

 2 

 

 

 1 

 2 



0.50 

 0.34 



0.11 

 0.15 









 

 

 

 

 



1 







1 

 1 







1 



2 





3 



24 



94 



86 



96 



108 



106 



282 



370 



872 



672 



311 



1,169 



],«.'i5 



33.33 

 50.00 

 96. 91 

 106. 17 

 114.29 

 125. 58 

 123. 26 

 140. 30 

 149.19 

 148.81 

 130. 49 

 124. 90 

 124.36 

 137 41 



1 









2 •. 



3.09 







3 



4 







3.57 

 1.16 

 2.33 

 1.00 

 0.81 

 0.51 

 0.97 

 0.80 

 1.38 

 0.74 







5 







6 



1.16 





7 to 9 „ 



0.50 



10 to 14 



0.81 

 2.05 

 2.72 

 2.41 

 0.32 

 2.37 



15 to 30- „ 



0.17 

 0.19 



31 to 50 



Over 50 



Under 15 __ 



0.11 



15 



15 and over 



























1 



