84 A TEXT-BOOK OF GRASSES 
115. The Pacific slope—tIn the great interior valley 
of California and northward through eastern Oregon, 
eastern Washington and northern Idaho, the rainfall comes 
mostly in the winter, this season being comparatively 
mild. Under these conditions the winter season is adapted 
to the growth without irrigation of annual crops such as 
grain. The summers are hot and dry, and irrigation is 
necessary for summer crops such as alfalfa. The region 
to the northwest of this is humid (Par. 110). 
116. The relative importance of the different kinds 
of forage in the different regions of the United States.— 
The production (tons) of the kinds of forage mentioned by 
the thirteenth census report is given in the following 
table, each being arranged by states. The production of 
each kind of forage in the United States is shown in Figs. 
2 to 10. 
TABLE XVII 
Tue Propuction (Tons) oF Hay anp ForAGE FoR 1909, BY THE TEN 
LEADING StTaTEs, OF Eaco KInp oF FORAGE 
Timothy 
1. Ohio . 2,348,660 6. Pennsylvania . . 1,200,073 
2. Iowa . 1,952,956 7. New York . 1,159,083 
3. Illinois . 1,947,572 8. Wisconsin . 1,110,446 
4. Indiana . . 1,442,218 9. Minnesota . 1,101,510 
5. Missouri . 1,334,556 10. Michigan 929,165 
Timothy and clover mixed 
i Towa |. . i -9s, Sloe Lee 6. Missouri . 1,630,211 
2. New York Pa SB | 7. Minnesota . . 14sec are 
3. Wisconsin . 2) aye ake 8. Ohio . 1,346,347 
4. Michigan . 1,991,618 9. Illinois . 1,123,254 
5. Pennsylvania . 1,830,852 10. Vermont 628,098 
Clover alone 
1. Illinois ;. 539,790 6. Tennessee . . 201,926 
2. Indiana . 314,818 7. Iowa . . 195,579 
3. Missouri . 309,209 8. Wisconsin . . . 193,786 
4. Ohio : . 239,492 9. New York . . . . 114,864 
5. Michigan . . . 216,862 10. Minnesota. . . 106,334 
