CORRELATING AGRICULTURE IN SOUTHERN STATES. 39 



3. How many cubic feet in a bin of sufficient capacity to contain the yield of a 

 ooy's acre that makes 156 bushels? 



4. Find the profit made on a tenth of an acre of tomatoes when the land rent is 

 $1, labor $3, staking and pruning $2, fertilizer $2.50, cans $36, canner $5, cost of 

 canning $10, and the output 1,200 cans, at 8 cents per can. 



5. Find the per cent profit in problem 4. 



NOVEMBER. 



1. What will it cost per acre to set an apple orchard if young trees cost 25 cents 

 apiece and are planted in squares 36 feet apart? 



2. If it requires 15 bushels of corn, at 50 cents a bushel, and $5 worth of other feed 

 to raise a pig to be 9 months old, what is the cost of the pig to the boy? 



3. If a scrub pig nets 150 pounds and is sold at 8 cents per pound when 9 months 

 old, will there be a net profit or loss? 



4. If a pure-bred pig nets 250 pounds when 9 months old and is sold at 8 cents per 

 pound, is there a profit or loss? 



5. A poultry club girl has a flock of 15 hens. Each hen averages 96 eggs per year. 

 What is the value of all the eggs at 15 cents per dozen? 



6. She feeds her flock of hens during the year 3 bushels of corn at 50 cents a bushel, 

 1 bushel of oats at 50 cents a bushel, and $2 worth of other feed. What is her profit? 



7. The second year she improves her stock, and each hen averages 120 eggs. What 

 is her profit? 



DECEMBER. 



1. A farmer owns 12 cows that average 22 pounds of milk each daily. How many 

 pounds does his herd produce in a year? 



2. If the milk of the above herd tests 4 per cent butter fat, what is the value of the 

 year's production at 25 cents per pound butter fat? 



3. If by changing the nutritive ratio of the feed the above-mentioned farmer in- 

 creases the production of each cow 2 pounds per day without additional cost, what 

 will be his increased receipts? What will be the per cent increase? 



4. Each cow of a Holstein herd averages 30 pounds of milk daily, each cow of a 

 Jersey herd 20 pounds, and each cow of a scrub herd 15 pounds. The Holstein milk 

 tests 3^ per cent butter fat, the Jersey 5 per cent, and the scrub 3| per cent. Find 

 the value of the average daily production of butter fat of each cow at 25 cents per 

 pound. 



JANUARY. 



1. A fertilizer formula sets forth the available essential elements — namely, phos- 

 phoric acid, ammonia, and potash — that the particular brand contains. For example, 

 a 10:2:2 formula means 10 per cent phosphoric acid, 2 per cent ammonia, and 2 per 

 cent potash. Find the number of pounds of each element in a ton- (2,000 pounds) 

 of 10:2:2 goods. 



2. If phosphoric acid is worth 4 cents per pound, ammonia 15 cents per pound, 

 and potash 5 cents per pound, find the cost of the fertilizing elements in a 10:2:2 goods. 



3. If a ton of 10:2:3 goods cost $24 in market, what would be the value of a man's 

 time (5 hours) who compounds his own fertilizer by the same formula when the ele- 

 ments cost the same as in problem 2? 



4. Acid phosphate usually found on the market contains 14 and 16 per cent phos- 

 phoric acid; kainit usually contains 12 per cent potash; muriate of potash contains 

 50 per cent potash; nitrate of soda contains 16 per cent nitrogen, or approximately 

 19^ per cent ammonia; cottonseed meal usually contains 2 per cent phosphoric acid, 

 7 per cent ammonia, and 1^ per cent potash. 



