NATIONAL ORIGINS PROVISION OF IMMIGRATION LAW 23 
not make any allowance for the difference in fecundity. But in the 
main division into the original native or colonial stock and the post- 
colonial stock, that matter of fecundity, as Senator Reed says, was 
automatically taken care of. So there the question does not arise. 
But the colonial stock, having been once determined, had to be 
further divided according to nationality—so much English, so much 
Irish—and that was also the case as regards postcolonial stock, when 
the total had been determined it had to be further divided by nation- 
alities. 
Now, in determining the nationalities, in determining what pro- 
portion of the total colonial and of the total postcolonial stock was 
German and what proportion was English, and so forth, we did not 
make any allowance for differential fecundity. We went on the 
assumption that the natural increase, in the long run, was the same 
or practically the same for these different national stocks. 
The Carman. Are there any further questions any member of 
the committee desires to ask? 
Senator Rerp. I have no other questions. 
The Cramrman. Is there anything you would like to say, Doctor, 
to the committee ? 
Doctor Hrir. I would like to say in this connection that I do not 
oelieve that that introduces any serious element of error. 
The Crarrman. That is, what introduces so large an element? 
Doctor Hrrr. The assumption that we made that the natural in- 
crease of these various national stocks, German. English, and Irish, 
and so on, was the same, 
The CuamrmaxN. What was your assumption ? 
Doctor Hrrr. That is the assumption which we made. We as- 
sumed that the natural increase was the same. We assumed that the 
Irish stock increased the same as the German; that the German stock 
increased the same as the English, that is at the same rate. Most 
people would say that that is not in accordance with the facts. They 
would say, « Why, look at the French Canadians, look at the Irish, 
and look at the Germans. How much more rapidly they breed than 
the English stock does.” There is a decided difference at the present 
time for about one generation, and then, when you get to the second 
generation, the difference has largely disappeared. 
Senator Coreranp. Have they become Americanized ? 
Doctor Hur. When you get to the third generation, I do not be- 
lieve you will find any difference in the natural increase, they have 
become Americanized in that respect. There are some figures that 
indicate that. ‘We have the figures that show that the second genera- 
tion of any foreign stock does not have as many children as the first 
generation. So I would say that there is no material error in the 
assumption of equal rates of increase. 
Senator CopeLanp. That is true of the old New England families? 
Doctor Hrrr. Eminently true. The old New England families 
increased in the early days just about up to the limit, I think you 
might say that they had just about as many children as it was 
physically possible for them to have. Of course, a great many of 
the children died in infancy or childhood, but enough of them lived 
fo result in very rapid increase of population through that period. 
The Cruammaw. That is all, Doctor. Mr. White.