older farmers. But Figure 4 shows, as far as the kinds of work 

 treated in this study are concerned, that the amount of work is 

 negligible that farmers leave to mechanics. It is consistent with 

 accumulated experience to interpret the facts to mean that agricul- 

 ture is a vocation >o broad that it actually requires a number of 

 years in order to obtain a well rounded training in it. Rotations 

 in crops and changes brought about by special market conditions 

 are some of the reasons why the work varies from year to year. 

 I'ertain objects such as hog houses are built only occasionally, and 

 certain repair work has to be done only every few years. Success- 

 ful farmers are always learning and grow r constantly in their voca- 

 tion. A lifetime of successful farm experience is not time enough 

 in which to master the skills and acquire the technical knowledge 

 that may be used in the pursuit of an agricultural career. 



