542 



HUMAN BIOLOGY 



Table vi 



children born to mothers of i923, by fathers aged forty-five years or 

 over, by occupation of father, in reconstituted general classes 



or OCCUPATIONS 



Occupation of Father 



en 



O 



H 

 (a) 



c 



11 



IS 



c 

 u 



(g) 



Agriculture, forestry and ani- 

 mal husbandry 



Extraction of minerals 



Manufacturing and mechanical 

 industries 



Transportation 



Trade 



Public service 



Professional service 



Domestic and personal service. 



Clerical occupations 



Totals 



41,825 289,1401 251,833 

 4,117 32,677 26,6og 



i7g,6oi 

 22,gg7 

 30,38g 



4,374 

 21,672 

 10,799 



6,296 



100,946 



650,244 



6.91 6.02 



7.g4 6.46 



60 5.46 

 03 5.13 



15 

 47 

 18 

 29 

 26 



554,570 



4-49 

 4.61 

 3.72 

 4.46 

 3-75 



0.89 



1.48 



1 . 14 

 o.go 

 0.66 

 0.86 

 0.46 

 0.83 

 0.51 



6.445.490.91 54.8 



I I 



12.9 

 18.6 



17.3 

 14-9 

 12.8 

 15.7 

 II .0 

 15.7 

 12.0 



have a baby in 1923. That there are very few of such low 

 fertlHty matings included is evident if it is recalled that we 

 here are deahng only with famihes in which the father was 

 forty-five years of age or over in 1923. In general the vast 

 bulk of men who engender a baby when they are forty-five 

 years old, or over that age, are probably persons whose whole 

 marital history has been characterized by relatively high 

 fertihty, as compared with the rest of their same social class. 

 The net result is that the values in columns d and e of 

 Table iv somewhat exaggerate the true average fertihty 

 of the whole population of the same age in the various 

 occupational classes. The figures represent the average 

 size of family of a selected sample only of the total popula- 

 tion in each class, the basis of the selection being high and 

 probably historically continued fertility. This means that, in 

 the best case, we can only discuss from these data relative 

 and not absolute fertihty values. But there seems no reason 



