64 PLANT SUCCESSION AND CROP PRODUCTION 



(h) The Dairying Indiistry 

 The number of milch cows in 1915 was 748,526. These were 

 distributed over the state in the following proportions: 



Northeastern section 254,050 



Northwestern " 225,090 



Southwestern " 152,560 



Southeastern " 116,826 



This distribution makes the northern half of the state the dairy 

 cow center. This agrees with the hay and pasture provinces both 

 in the United States and in Ohio. A region in which summer pas- 

 tures are most productive is adapted to dairying. The conditions 

 making for productive summer pasture insure a good hay crop for 

 winter feeding, and with silos green feed can be had in winter. 

 Milk production, butter and cheese production, both that made in 

 home dairies and in factories and creameries follow the general 

 trend of this distribution. Space does not permit the detailed re- 

 cital of these accounts. The northeastern section contains 50 per- 

 cent of the creameries of the state and 54 percent of the cheese 

 factories. The home production of butter and cheese greatly ex- 

 ceeds the factory production of both of these commodities. 



(1) Horses and Fat Stock 

 The corn belt — the northwestern part of the state shows the 

 dependence of the fat stock upon grain. The horses are there be- 

 cause their work is needed for the production of this grain. Forty- 

 four percent of the beef cattle are in the southwestern section of 

 the state, where the most dissected part of the glaciated region 

 permits corn cultivation and has produced land suitable for winter 

 feeding of beef cattle on com roughage. Twenty-six percent of the 

 beef animals are in the northwestern part of the state. Thus the 

 western half of the state supports sixty-eight percent of the beef 

 production. The southwest has thirty percent of the state's pro- 

 duction of hogs. The hog center is in the northwest which has 

 forty-four percent of the production. Seventy-four percent of the 

 hog production is located in the corn belt. 



(j) Sheep 

 There is an important sheep raising center located in south- 

 western Pennsylvania and southeastern Ohio. This the writer 

 (1918 p. 79) has described as an edaphic center or one related to 



