[ 4* ] . 



idly, Tothe progrefs of the growth of the plant at each 

 period. 



%dly. To the different kinds of potatoes with which it is 

 tried. And, 



$thly. To the nature of the weather at the time. 



Experiment Seventh. 



With a view to afcertain whether any lofs, and what, 

 as to the weight of potatoes, was fuftained by cutting over 

 the ftems at different periods, all the plants whofe ftems 

 were cut over in experiment 5th, were allowed to ftand till 

 the 28th of October, at which time they were all taken up, 

 and the produce of each parcel feparately weighed. On 

 the 28th of October alfo, nine other plants marked xxx, 

 &c. fee the foregoing diagram, being part of three rows, 

 three plants in each row, that grew contiguous to the po- 

 tatoes cut, (two rows intervening, fo as that they could 

 not be influenced by the opening occafioned by cutting the 

 flems of the potatoes 000, &c.) were taken up by them- 

 felves and feparately weighed. This, it was fuppofed, 

 gave a very fair average of what the cut plants would have 

 yielded, had they been allowed to remain uncut ; and of 

 courfe, that the difference between the weight of each of 

 thefe patches fhewed the lofs of crop occafioned by the 

 cutting of the ftems at the different periods indicated. 



Thefe particulars are expreffed in the following table;-— 

 to which is added a column, denoting the total lofs of crop 

 per acre, that would be fuftained by cutting over the ftems 

 at each period refpedtively. 



Time 



