89 
ete., including attendance on patients living in unsanitary homes, even 
their own ill-ventilated offices, may lead a doctor to seek relief. 
A green square indicates country life, or good air life, in contrast to 
the vellow, or polluted city air life. The half and half squares at the bot- 
tom mein that some members are living in the country, others in villages, 
town and cities. 
Black lines indicate no definite data regarding individuals. 
There are eleven children in the first generation in this country. Today 
the descendants of one seem to outnumber those of all the others; this was 
a@ man who married a strong-minded German catholic. The chart showed 
that these lead mainly a simple country life, with large families and a 
practical absence of hnarcomania. 
TIME SPENT IN GOOD AND IN BAD AIR. 
Primitive man 0/24 0/7 0/365 , 
Hunter and trapper 0/24 0/7 x/365 
Squatter 0/24 0/7 x/365 
Farmer 0/24 SHC x/365 
Villager x/24 yh (8 hours of labor. 
Townsman ) 8 hours of recreation. 
Cityman 8 hours of sleep. 
| Under what air conditions? 
Slum dweller 24/24 pe 365/365 
This chart (table) is an attempt to express in a general way time 
spent in good and in bad air. At one extreme is the savage, living say in 
the mild tempered South Sea Islands, with good air at all times; at the 
other extreme is the slum dweller with 24 hours of bad air, T days a week, 
565 days a year. 
Air conditions under which people live can not be considered collect- 
ively; each individual must be studied separately. Ordinarily we as- 
sume that a farmer is leading the good air life, but when the farmer comes 
to town every Saturday, or perhaps daily in spring and fall, and loafs 
for hours on street corners, with clouds of infected dust blowing about, he 
mmaty carry home enough infection to last him for days. 
The ideal of the union labor man is the eight-hour day. But we 
must question where? Under what air conditions—good, bad, indifferent— 
