2 SUMMARY OF DATA ON ORIGIN AND BIRTHPLACE . the light of sex distribution and infant mortality rates, suggests that the fertility of the Slavic, Latin and Greek stocks in Canada is much greater than that of the British. It appears also that the fertility of the French, German and Scandinavian stocks, though somewhat greater than that of the British, was not nearly so high as that for the South, Eastern and Central Europeans. The proportions of the several groups under ten years of age are shown in Chart 16. The seven origins with the largest proportions under ten and the seven with the smallest are as follows: — The Upper Group Origin Ukrainjan..........cooeveieviiiiniiiiin., Austrian. ..... A Roumanian..............cooeveiuneunnnnnon, POUehi,, os ovr srtunns va 55s ide conn mns nro Hungarian... .. PUBTHRE Lh borms worm vn 1 Russian....... riers P.c. under 10 years of age 36-67 35-3 "5-3. -64 70 67 2-91 The Lower Group | P.c. under 10 years of age Origin Chinese.............. swan Bulgarian.............coiiiiii ee a Irish... Jeoteh. oii melish. oii, LT 3 vor pomenann ms Welsh. oomnmnns is aan 2 45 « . 5-18 14-27 20-00 20-70 21-62 21-96 99.3% Each of the first group has a larger surplus of males than have the British stocks in Canada. In all cases the infant mortality rates are considerably greater than for the British. Both of these factors would make for smaller numbers of children. On the other hand, the age distribution of the adults is more favourable to fertility. While larger proportions of the men of British origin were away during the war, the differential effect of this cir- Cuart XVI PERCENTAGES or CHILDREN UNDER 10 YRS.or AGEor SPECI- FIED. GROUPS in CANADA 192] ORIGIN 0 N Western Europe (continenTan S.,.Eastern ano Cent. Euros 30 35 40) Bris SCANDINAVIAN GERmantc Latin anp Greek Siavie cumstance on the proportions under ten years of age was largely offset by an exceptionally high marriage rate among the British between the years 1919 and 1921, which was imme- diately reflected in the number of births. Consequently, differences due to war service may be neglected. Unfortunately the relative importance of high fertility cannot be isolated from the above data. The table is significant. however. in showing the maenitude of the