64 



PRIMARY RESULTS 



to year are very slight on farms where the labour is carefully 

 planned and well directed. On an east-midlands farm 

 employ big twenty -three horses, the days worked per horse 

 during the past six years have been as follows : 



Year . . 1913-14 1914-15 1915-16 1916-17 1917-18 1918-19 



Days worked per 



horse 



250-25 



247 



243 



236 



243 



244-5 



The tendency of the change in the total cost of horse labour 

 on the farm during these years, and the influence on the cost 

 per horse-day of the proportion which days worked bear to the 

 possible working days, is shown by the following graph : 



