lib FARM ARITHMETIC. 



50 per cent more than the first year. If he had sold his 

 crop at 40 cents a bushel, how much would he have made 

 on his expenditure of time in careful selection and plant- 

 ing? 



387. He felt encouraged by his results, and tried the 

 plan a third year, this time using the best tubers for his 

 selection plot and the next best for the general field. Im- 

 agine his surprise and pleasure at digging time to find that 

 the selected tubers in the general field yielded 30 per cent 

 more salable tubers than unselected seed, which yielded 

 150 bushels an acre. He sold his crop at 40 cents. How 

 much did he make an acre on the time spent in selecting 

 the seed the first and the second year ? 



388. A man bought a Maryland farm which had an 

 orchard of 100 mature but neglected trees, that bore 

 scarcely more than a barrel of salable fruit each the first 

 year. Before spring opened the following year he had 

 cut out all the dead wood and as many of the Avater- 

 sprouts as he dared, but was prevented from doing any 

 spraying, fertilizing, or cultivating that season. In the 

 autumn he harvested and sold an average of three bar- 

 rels of salable apples to the tree at $2 a barrel. He fig- 

 ured that the pruning took him an average of two hours 

 to the tree, and that his time was worth 25 cents an hour. 

 What did he make out of his pruning? 



389. The next year he fertilized the whole orchard 

 with stable manure, but could get none of it sprayed and 

 only half of it plowed. This half he kept cultivated un- 

 til midsummer, when he sowed crimson clover as a cover 

 crop. Plowing and cultivating cost $25. At harvest time 

 he found that the cultivated plot yielded 50 per cent more 

 salable fruit than the uncultivated part. He received $900 

 for the fruit. How much money did he get from each 



