290 



Journal of Agricultural Research 



Vol. XVI, No. II 



Table I. — Aggregation of seed piece performance of Irish potatoes — Continued 



p. — INFECTED CERTIFIED WISCONSIN RURAL NEW YORKER 

 [r equals 6.25 per cent of 16] 



E. — RED RIVER VALLEY EARLY OHIO. 

 [i equals 0.259067 per cent of 386] 



F. — INFECTED RED RIVER VALLEY E.\RLY OHIO. 

 [i equals 2.857142 per cent of 35) 



G. — CARBONDALE RURAL NEW YORKER 



[i equals 0.3x25 per cent of 320] 



H. — GREELEY LATE OHIO, 

 [i equals i.iiiiii per cent of 90] 



