204 THE BUTTER INDUSTRY IN UNITED STATES [428 



Diagram IX. — Comparison of Supply of Butter and Annual Average Prices 

 Percent- 



,„. .( O ■- N fO + m H) N 00 00 >i N rO^-u-)vOr-.00O%O >->N c~0 

 a fe e OI 0\0\0\OnO\<^0>0\ OnOOO o 000 00 o o ►» ►- w m 



base 0000000000000000 oooooso\o\o\ONOsONO\cy>c^c\a\ONON 



a — Price index, b — Supply index, c — Moving average of price, d — Mov- 

 ing average of supply. 



Drawn from data in Table no. 23. 



