CLASSIFICATION OF MIXED STOCKS 15 
even when the two peoples have merged biologically and socially, the origin data perform 
» practical function in tracing the progress of the assimilative process and finally demon- 
strating that assimilation has taken place. 
There are other peoples like the South, Eastern and Central Europeans who are less 
successful in adapting themselves to Canadian social and legal institutions. The problem 
of assimilating such people is a difficult one. With these peoples, however, much less 
.ntermarriage has taken place than is often supposed. It is shown in chapter VI that 
only about 5 p.c. of the men of South, Eastern and Central European stocks had married 
into the British or French stocks in Canada up to 1921 and less than 3 pe. of the women. 
Almost all of those classed as of Slavic stock are, therefore, of Slavic or allied origin and 
the origin data for such people may be taken as accurately describing the behaviour of 
very definite groups in the population. This will continue to be the case until inter- 
marriage has proceeded much further than it has done up to the present. 
The origin data are thus most adequate in the case of groups where accuracy is most 
lesirable, for it is with the groups where intermarriage has made least headway that the 
progress of assimilation is slow and merits careful attention. The differences established 
n the various chapters of this report testify to the adequacy of the census procedure in 
‘espect to these non-assimilatine peoples.