Moreover, it is possible for every farmer to determine exactly the producing-power of his dairy cows. When the cows are milked, the milk should be weighed and a record kept. If this be done, it will be found that some cows produce as much as five hundred, and some as much as ten hundred, gallons a year, while others produce not more than two or three hundred gallons. If a farmer kills or sells his poor cows and keeps his best ones, he will soon have a herd of only heavy milkers. Ask your father to try this plan. Read everything you can find about taking care of cows and improving them, and then start a herd of your own. =Conclusions.= (1) A cow with a tendency to get fat is not profitable for the dairy. (2) A thin, open, angular cow will make expensive beef. (3) "The sire is half the herd." This means that a good sire is necessary to improve a herd of cattle. The improvement from scrubs upward is as follows: the first generation is one-half pure; the second is three-fourths pure; the third is seven-eighths pure; the fourth is fifteen-sixteenths pure, etc. (4) By keeping a record of the quantity and quality of milk each cow gives you can tell which are profitable to raise from and which are not. (5) Good food, clean water, kindness, and care are necessary to successful cattle-raising. [Illustration: FIG. 251. HOLSTEIN COW] The ownership of a well-bred animal usually arouses so much pride in the owner that the animal receives all the care that it merits. The watchful care given to such an animal leads to more thought of the other animals on the farm, and often brings about the upbuilding of an entire herd. SECTION LV. SHEEP The sheep was perhaps the first animal domesticated by man, and to-day the domesticated sheep is found wherever man lives. It is found domesticated or wild in almost every climate, and finds means to thrive where other animals can scarcely live; it provides man with meat and clothing, and is one of the most profitable and most easily cared-for of animals. [Illustration: FIG. 252. A YOUNG SHEPHERD] Sheep increase so rapidly, mature at such an early age, and have flesh so wholesome for food that nearly every farm should have its flock. Another consideration that may be urged in favor of sheep-raising is that sheep improve the land on which they are pastured. Sheep are docile and easily handled, and they live on a greater diversity of food and require less grain than any other kind of live stock. In mixed farming there is enough food wasted on most farms to maintain a small flock of sheep. [Illustration: FIG. 253. SHEEP HAVE LONG BEEN CALLED THE GOLDEN-HOOFED ANIMALS] Sheep may be divided into three classes: I. _Fine-Wooled Breeds_ 1. American Merino. 2. Delaine Merino. 3. Rambouillets. 4. Hampshire Down. 5. Oxford Down. 6. Cheviot. II. _Medium-Wooled Breeds_ 1. Southdown. 2. Shropshire. 3. Horned Dorset. III. _Long-Wooled Breeds_