Page 361 - clra62_0019-(GIPE)

THE IMPORTINCE OF GENERAL STATISTICAL IDEAS 353
These diminutions in the rate of growth of large
populations, as I have indicated, are corroborated by a
study of the birth-rates, and of the rate of the excess
of bi,ths over deaths.
Tbe United States unfortunately is without birth or
death-rates, owing to the want of a general system of
registration over the whole country. This is a most
serious defect in the statistical arrangements of that
great country, which it may be hoped will be remedied
. in time. In the absence of the necessary records, I
have made some calculations so as to obtain a figure
which may be provisionally substituted for a proper
rate of the excess of births over deaths, which I sub-
mit for what it may be worth.as an approximation and
an approximation only. In these calculations one-tenth
of the increase of population between two census
periods, apart from immigration, is compared with the
mean of the population at the two census dates them-
selves, with the fol1owing results:

Approximale Rale 01 E)C(ess 01 BirlM wet' Deatlls in IAe United
Siales, (akulaled /rtJm a Comparison oIOne-Telll" I'" Increase
of Popliialion hlwten Ille CenSlis PeniJds, Dedu(HnC Immigra1lls,
wit" Ihe Mean olille Nllm6ers 011'" Populalion al IIIe Two
CenSlis Dales.

• • l •
O""T ... th Calculated Excea
Ve ... PopuJatiou. M .... orPop .. I .. 01 Increase .iDCCI of Births OYer Deaths
tiOUbe.weeD previoua CCDl11S,
TwoC ... uses. rmmipaa&s. ~o!':fcot. 1
1-
lOCo! ...
-
.Boo. MIns. MIDo. n ........ d •• -
-
-
S·J
-
'10. · 7·2 6.2 - -
'20. 9-6 8.4 -
'3°· · 12·9 11.2 308 28
4°. 17·1 IS·O 3 60 24
'So. · · 2J.2 20.1 441 22
'60. · 31 .4 27·J S65 21
'70. · 38.5 3S·0 46:1 IJ
'So. 50.2 44·4 878 20'
'90. · 62.6 ~: 722 13
1900. · · 75-7 9 2 3 • IJ
, See remarks on pp. 348-349 on errors in Census of 1870'
U. AA