Experiments on the Potato-Crop. 559 



Whole Potatoes. 



Net. Balances, 

 tons. cwta. qrs. lbs. 



Flukes, 4 oz. sets, 1 foot apart, produced 13 3 3 23 



Flukes, 4 oz. sets, 9 inches apart, produced 13 4 2 6 



Flukes, 2 oz. sets, 1 foot apart, produced 7 5 27 



Flukes, 2 oz. sets, 9 inches apart, produced 5 12 3 17 



Flukes, 2 oz. sets, 6 inches apart, produced 7 10 2 23 



Late Red, 2 oz. sets, 1 foot apart, produced 30 15 2 26 J 



Aggregate on six acres of 77 13 lOj 



Average per acre 12 18 3 11 



Showing an average balance in favour of the cut sets over an 

 equal weight per acre of whole sets of about 8^^ cwts. per 

 acre. 



In another instance 



tons. cwts. qrs. lbs. 



Flukes, 3 oz. sets, cut out of 6 oz. sets, 9 inches apart, gave 14 8 1 23 

 And Flukes, 6 oz., uncut, planted 1 foot 6 inches apart ,.1390 1 



Showing a net balance in favour of the cut sets of . . 19 1 22 



Both these comparative series indicate a slight advantage in 

 favour of the cut sets ; but since the individual experiments do 

 not all point in the same direction, the result of the series 

 cannot be looked upon as at all decisive ; but it rather tends to 

 the conclusion previously indicated, that the loeigkt per acre of 

 the sets planted has more to do with the produce of the crop 

 than any other circumstance. 



Fifthly. As to the influence of thick and thin plajitiny, and of the 

 size of the set on the jproportion home between the xoeight of the 

 sets and their individual produce, and the rate of increase under 

 various conditions. 



This subject presents itself under yet another aspect, which 

 interests the physiologist rather than the farmer, viz., the propor- 

 tion borne between the weight of the sets and the weight of the 

 crop, or, in other words, the rate of increase. This rate, as was 

 to be expected, is larger as the sets are smaller and as the 

 distance is greater, up to 1 foot apart, beyond which space no 

 perceptible change takes place. 



On the general average of these experiments — 



The 1 oz. sets increased 14'24 fold 



The 2 oz. „ 8-77 „ 



The4oz. „ 5-87 „ 



The 6 oz. „ 5"81 „ 



TheSoz. „ 4-83 „ 



At 1 foot interval, the 1 oz., 2 oz., and 4 oz. sets increased 11*50 fold 

 At 9 inches „ „ „ 9*64 „ 



At 6 inches „ „ „ 7-73 „ 



