5 ;^> 
In my own work 1 was surprisod to find that hookworm disoa^o was 
comparative!}^ light and comparatively rare among th(‘ miiuM-s 1 exam- 
ined. Of brickmakers my statistics are too small to p«‘rmit anv gen- 
eralization. Two examinations out of eight showed ligdit infections. 
Most of my cases were from the farming classes. 
Sandwith emphasizes the fact that his patients came from the ])oor(‘st 
class of the community, and that of !^0(l men llMi w(‘re aceustonuHl to 
work with their hands in more or less daini) earth. Of th(‘se llM) men, 
152 were agricultural laborers; 18 were masons or bi-ieklayers' 
laborers; 7 were ‘bscavengers of street refuse and of cesspools, accus- 
tomed to emptying with their hands the dry contcmts of the latter;” 
7 were peddlers of unwashed vegetables; 3 limestone callers and scav- 
engers; 1 gardener; 1 fisherman in the mud; 1 •\shadouf" worker at 
the Nile bank; 1 cofi'ee-stall keeper; 3 readers of the Koran; 1 black- 
smith; 1 shoeblack; I beggars. Sandwith also mentions 2o eases 
among policemen, who dated their illness from periods of life when 
working as agricultural lal)orers. 
SEVERE CASES ARE MORE COMMON IN WOMEN AND CHILDREN THAN IN MEN OVER 
TWENTY-FIVE YEARS OF AGE. 
The assertion is frequently made that uncinariasis is moi'o common 
in men than in women and children. This statement may b(‘ pm-fectly 
correct in mines and brickyards, but it does not hold good for tin* 
farming localities I visited, Avhere the greater jm'valence of s(‘V(‘re 
cases in children than in adults, and in women and children than in 
men over 25 years, of age, is very striking. The conditions found, in 
respect to this point, seem to be due to four factors in jiartiiailar, 
namely: (1) The average family in the country districts numbm-s from, 
say, (> to 12. As a rule, 2 or 3 of these can be calhal adults, and 
3 to can usually be classed as children (including minor boys and 
girls). Since there is a greati'r number of childnm than adults sub- 
ject to infection, we should naturally (‘xpi'ct to tind a gn'atm* nnmb(*r 
of cas(‘s among the children, and our ex]K‘ctations an* fully realized. 
(2) The fact that children and women })n*sent a gnaifer numlM*r of 
casi's than do the adult males over 25 years of age I am inclined also 
to ex})lain on th(‘ g’round that the foriiuM’ an* at hoiin* more than are 
the men; tin* ari'a immediately surrounding tin* housi*, for, say, a nidins 
of 50 meters, is a more common jilaci* for (h*f(‘cati(m than an* the inon* 
distant fields, hence it is more seven*lv inf(*sted with the inti*cting 
agent. Now, whih*. it is true that, among certain class(*s, both woim*n 
and children work in the ti(*lds, it is also trin* that they <lo this mneh 
less than the men. They an* at home inoiv, th(*n*ton* they are on the 
more intensely inf(*ct(*d area for a greati'r l(*ngth ot time; ln*nce, m 
respect to actual tiim* th(*y an* mon* subj(*ct to inl(*(*tion than ar«* tin* 
men, and, other things being equal, th(*y will piM*s<*nt a givatei* num- 
