WHY PLANTS GROW 15 



Table I. 



Table showing legal weight per bushel of farm products in 

 the majority of states: 



Wheat 60 Ibs. 



Potatoes 60 Ibs. 



Peas 60 Ibs. 



Beans 60 Ibs. 



Root crops (average) 60 Ibs. 



Onions 57 Ibs. 



Corn (shelled) 56 Ibs. 



Rye 56 Ibs. 



Barley 48 Ibs. 



Buckwheat 48 Ibs. 



Oats 32 Ibs. 



Handy Values. 



A bushel requires about \Y^ cubic feet of space. 



A bushel of corn in the ear requires about 2 cubic feet of space. 



A barrel of water requires about 4 cubic feet of space. 



A ton of hay fills about 512 cubic feet of space, or 8x8x8 cubic 

 feet. 



A cubic foot of water weighs 62^2 pounds. 



NOTE I : All the above should be memorized. 



NOTE II : Pupils should also memorize tables of avoirdupois 

 weight, dry measure, liquid measure, long measure, square 

 measure, and cubic measure, with all the necessary abbreviations. 



Problems. 



1. How many pounds of wheat are grown on an 

 acre yielding 25 bushels? 



2. How many pounds are grown on eight acres at 

 the same rate? How many tons? 



3. How many square rods in an acre ? How many 

 .pounds would that be per square rod? 



