By Mr. Robert Thompson. 



159 



ing me, planted root-cuts, &c. from different Potatoes of one sort, 

 instead of all the cuts to be compared being from one tuber. 

 The result is as follows : — 



Root end cuts 26 lbs. Middle 201 lbs. Rose or crown end 24 lbs. 

 There were 20 cuts of each sort, planted at the usual distance, and 

 a single eye in each cut. Though this does not give a strict com- 

 parison of cuts from one tuber, yet it may be regarded as giving 

 a fair mean result. The inferiority of the middle cuts is re- 

 markable; and it appears of some importance to repeat the ex- 

 periment with different varieties of the Potatoe, attending carefully 

 that only one eye shall be in each cut. When the eyes are crowded, 

 as in the crown or rose end, they should be all cut away but one. 

 I am aware that it has been the universal opinion that the crown 

 end is the most productive ; but this appears to have been taken 

 for granted, and not deduced from experiment. The great number 

 of eyes also at the crown end, may have contributed to an increased 

 produce. In planting a field it is always advantageous to have at 

 least two eyes, lest one should be cut off by frost." 



In order to try the effects of different depths of planting, a 

 quarter was divided into 4 equal parts, and planted with sets 

 in the second week in April, at the respective depths of 3, 

 4, 6, and 9 inches. The results, computed for an acre are as 

 follows : 



The greatest produce was from the plantation at 6 inches deep ; 

 and next to it, from that at 4 inches. Those planted only 3 inches 

 deep gave the least return. Many of the sets buried 9 inches did 



