THE WAR AND POST-WAR PERIOD 
quarter of 1922 there had been a decrease of about 3,300,000 in the 
number employed in mining, construction, and manufacturing, ac- 
companied by a total net immigration after the third quarter of 
1920 of 158,000. 
Clearly, in the depression of 1921 the available evidence indicates 
that migration was a factor aggravating unemployment to some 
extent but was not sufficiently large in volume to be considered a 
major cause of unemployment. 
TABLE 32.—NET MALE MIGRATION AND CHANGES IN THE VOLUME OF EMPLOYMENT 
IN SELECTED INDUSTRIES IN THE DEPRESSION OF 
1921-1922 
Unit= one thousand persons 
ARRIVALS LESS DEPARTURES or |CrANGE IN NUMBER EMPLOYED! 
ALIEN MALESs 
YEAR AND fone Een = 
QUARTER IN GIVER AFTER THE | FroM PRE- AFTER THE 
UAGTER THIRD QUARTER CEDING THIRD QUARTER 
oF 1920 QUARTER OF 1920 
1020 N 
1st quarter. . . . rl 2 ‘iti iw Te tain 
2d quarter. .... Pes, + 462 Fpl 
3rd quarter. . . . & onl + 192 aia 
4th quarter. . . . + 84 —1,199 —1,199 
1921 
1st quarter. ... . +140 ’ —2,786 
2d quarter. . ... +180 —3,271 
3d quarter. . ... - +168 —3,271 
4th quarter. . . . +154 —3,292 
1922 
1st quarter —3,330 
sComputed from Table 24. 
bBased on estimates of the total number of employees on the payrolls of all establishments in the ex- 
traction of minerals, construction, and factory industries, published in Employment Hours and Earnings in 
Prosperity and Depression, Vol. 5 of the publications of the National Bureau of Economic Research, Inc. 
Immigration from Canada. 
The post-war movement of immigration from Canada is of 
special interest because the 1921 quota law did not apply to natives 
of Canada or to persons born in other countries who had resided 
there for five years, and also because the volume of immigration 
from that country, as shown by the official statistics of theUnited 
States Bureau of Immigration, reached such dimensions in this period 
that it aroused considerable discussion in the Canadian press. 
133