8 INTRODUCTORY 
their business, and know about how far their conditions 
warrant the extension of their operations, so that it is not so 
necessary to offer suggestions to them along this line. It is 
true that the breeder of market hogs always has a use for pure 
blood, but it is not every person who can make a success of 
breeding pure-breds to supply the demand for breeding stock, 
and the average farmer is safer to adhere to producing market 
hogs. 
To sum up, it may be said that the hog is especially valu- 
able for consuming the by-products of the farm, and the 
number of hogs carried to advantage upon a farm is governed 
very largely by the quantity and character of the by-products 
to be consumed. When carried in appropriate numbers, the 
hog is an exceptionally economical producer of meat, preventing 
waste, and giving cash returns for substances that are fre- 
quently wasted, or which have little market value. Trying to 
take advantage of fluctuating market prices by alternately over- 
stocking and under-stocking with hogs is seldom a financial 
success. The man who consistently follows up the business 
upon conservative lines is the man who is well satisfied with 
the hog as a source of profit. 
REVIEW. 
1. Tell of the effect of the supply of hogs on the usual tendency of 
farmers to vary the size of their herds. 
2, Give a better plan of getting profit from swine. 
3. In what way must each farmer be his own judge regarding the 
raising of more hogs? 
4. Tell of the use of hogs as users of by-products. 
5. Which is better, to raise or to purchase hog feed? 
6. Which is usually better for the feeder, to raise young pigs or to 
buy them? 
7. Tell of the fitness of swine upon dairy farms. 
8. Under what circumstances should pure-bred hogs be kept? 
