48 ELEMENTARY AGRICULTURE 



How many pounds of each kind of fertilizing sub- 

 stance does he sell ? 



7. Suppose he sells 6 head of cattle weighing 1,050 

 Ibs. each. How much of each of these three sub- 

 stances does he sell ? 



8. How much butter did you (each family repre- 

 sented in the class) sell last year? How much of each 

 of these three fertilizing substances did you sell with 

 the butter? Did it wear out the farm much? About 

 how many loads of manure will it take to replace 

 them? (Suppose a load of manure weighs a ton.) 



9. How many hogs did you sell last year? About 

 how much did they weigh? How much phosphoric 

 acid went with them? How much nitrogen? How 

 much potash ? 



10. Did you sell any wheat? Any other grain? 

 If so, how much? How much of your farm went 

 with it? 



11. Pupils will furnish data for other similar prob- 

 lems. 



