Correlation of Brain Caparihj and Intelligence. 239 



9. 14 Foi-fioiy - 



10. 4 MoUxmnio Studonts - 



11. 5 EmhozzliMiiout 



12. Britisli As.sociation males 



13. 25 UnivtT.sity College Teachens 89.0 



14. 35 Anatomi.st.s 



The foregoing' tiil)le seems to us to eoiitina the general results 

 already attained. Of the rriniinal elasses it is extremely signifi- 

 cant that those convieted of skilled eiiines like forgery and embezzle- 

 ment head the list, separated fi-oui earh other by four students. 

 As the forgers and endx^zzlers are drawn from the business classes, 

 where intelligenee is required, it seems to us that the position 

 occupied in the tai)le by these two groups of criminals is exactly 

 that which miglit have l)een expected. The forgers ai'e followed, 

 in our table. I)v the miscellaneous crimes, which in this instance also 

 incliule certain crimes where some degree of intelligence would be 

 demande<l. Cattle stealing can hai-<lly be termed an intelligent 

 occupation, and it occupies the lowest ])lace on the list. We thus 

 see that the ciiininal classes ocoipy i)ositioiis which seem to us 

 to confirm the results we have already attained from our examina- 

 tion of the learned classes, and which all goes to prove that, as 

 regards the classes, there is an appieciable correlation between size 

 of head and intelligence. 



Concerning the ages of the .■}")") ciiminals lierein dealt with, we 

 find the true mean to be 'M AM 3-ears of age. The true means, prob- 

 able errors anil standard deviation of the ages of the several grouj)3 

 into which we have divided them are as under : — 



True Mean Standard 



of .\'^e. Deviation. 



•1. Cattle Stoal in;,' - - :?0.sa±1.41 - 4.68± .99 



2. Assault and WoniKlin-,^ - 'M H ±\.'y2 - 8.77±1.08 



3. Miscellaneous ("rimes - 34.1 ±1.14 - 12.20± .80 



4. Hou.se ami Sliophreakinj,' - :io.r):i±l.o8 - 12.01±1.12 



5. Larceny - - - 37.3U± .07 - 11.95± -47 



6. Sexual Offeuees - - :ilMlG±1.27 - 14.17± .90 



7. Forgery - - - :HMJO±2.64 - 14.69±1.87 



8. Murder and Manslaughter - t:?.l!)±2.76 - 13.56±1.95 



9. Embezzlem<-nt - - 4H.4o±4.(J0 - 1.5.03±3.20 

 10. Inebriety - - - lit. 13 ±1.73 - 13.11 ±1.22 



Individually the youngest cjf thc^c' ( riniinals is aged 20 years, and 

 tlie oldest 72. 'I'his notwithstanding, the i-omparatively high true 

 mean of the i limiiials as a wIkiIc. and in individual groups is 

 somewhat surprising, an<l may })ossibly be accounted for by the 

 fact that some of them are seiving long sentences. It would, there- 

 fore, be unwise to luakc any sweeping dt-ductions from these ages. 



