RURAL AND AGRICULTURAL EDUCATION 27 



proper training work (manual training?) for farm boys. On the 

 other hand, a real consideration of training for field and chore 

 skills is shown to be needed, for over half of the people rated are 

 probably farming with limited abilities in this respect. 



Again one is lead to ask how much physical capacity enters 

 into this question of skills? Can we eliminate that also? 15 Sub- 

 stituting the physical capacity correlation for mechanical ability,, 

 we use the following: r(fk)=.677, r(fp)=.354, r(kp)=.567, and 

 solving the new equation r(fk) :p .618. Again we are inclined 

 to remember that it was not always the strongest boy that shoul- 

 dered the sack of grain most easily or held out best in the long 

 day's stacking work. One step further: Can we get both of 

 these confusing factors out of skill, that is can we find the value 

 of r(fk) :cp? Using the following formula: 



r(fk) :c-[r(fp) :cXr(kp) :c] 

 r(fk) :cp= 



VI r(fp) 2 :c VI r(kp) 2 :c 



we find that r((fk) :cp=.5l5. This tends again to back up the 

 idea that there is a special farm type of skill that needs to be sub- 

 jected to special study. Whether it is an innate ability or can be 

 taught is also an important question. 



Two or more disturbing factors may be successively elim- 

 inated. The formula for r(fi) :e n m, etc., will be the highest one 

 used for this study. 16 In order to promote accuracy and facility 

 it is desirable where a large number of relations are to be consid- 

 ered to adopt a standard form of procedure. Table IV illus- 

 trates this method. Column 1 is the total or partially cleared 

 correlation ; column 2 is the numerator of the formula; column 3 

 is the denominator, and column 4 is the new or cleared, result- 

 ing correlation. 



15. "Eliminate*' or "cast out" should hereafter be consid- 

 ered in this larger aspect suggested above. 



16. r(fi) :en [r(fm) :enXr(im) :en] 



r(fi) : 



VI r(fm) 2 :en VI r(im) 2 :en 



