GRAIN FARMING IN NORTH DAKOTA. 21 
extent, the binder does not suffer as much from exposure to the 
weather as do certain other implements, notably those largely made of 
wood. 
Fic. 13.—The self-binder is most commonly used for harvesting grain. 
Mowing machines and hay rakes (generally two-horse size) are 
found on practically every farm (fig. 14). Each of these implements 
Fic. 14.—The mower. Often several acres must be cut to get a ton of prairie hay. 
is nearly all of iron, and depreciation is therefore not great’ when 
they are left in the open. 
