378 THE NEW WORLD OF SCIENCE 



some sixty occupations which occurred in the army were, there- 

 fore, brought together. The principal facts are indicated in 



[ : 



I D- I D I C- I C I C+ I B I 



laborer . . 



/-^ I Con. miner . . 

 ] Teamster . , . . 



I Barber | 



Horseshoer . . . __ . 



C 



Bricklayer . . ., (_ 



Cook | 



Baker ...... ' 



Painter _ 



Gen. blacksmith . . _ ___ 

 Gen. carpenter . . . ______ 



Butcher . _ 



Gen. machinist ... - 

 Hand riveter .... - 



Tel. & tel. lineman . j. 



Gen.pipefitter .... I 



Plumber I 



Tool and gauge maker . . I 



Gunsmith ] 



Gen>. mechanlo . . -- 



Gen. auto repairman . .* | 

 Auto engine mechanic . 

 Auto assembler . 



Ship carpenter ...... j 



Telephone operator | 



o 



Concrete const, foreman 



Stock-keeper 



Photographer 



Telegrapher [ 



l.R. clerk 

 Piling clerk 

 Gen. clerk . 



Army nurse | 



Bookkeeper . . . , I 



Dental officer . . . 

 Mechanical draftsman 

 Accountant ..... 



Civil engineer ........... _L 



Medical officer _ 



-{"Engineer officer 



I D- | D I C- | C I C+ I B I A I 



Figure 10. Occupational intelligence standards, showing the relation 

 of soldiers' intelligence to their occupations. 



Fig. 10, which represents the distribution of intelligence of the 

 middle fifty per cent, in each occupation. The vertical cross- 



