C 80 ] 
leaf of the potatoe was symptomatic, as ap- 
plied to its bulbous root, it might have been 
acceptable to many readers. But the surest 
way to produce what is generally called * the 
Curl,' is to plant the seed upon land which 
has been long in tillage, without giving it a 
plentiful dressing of manure. 
We presume that the planting of this root 
upon land which is intended to be converted 
from a state of grass to tillage, instead of 
‘ paring and burning,' (a process so much 
extolled by Mr. Young) will produce more 
solid advantages to the community than all 
the volumes of theoretical farming which 
have been issued from the hot-bed of his 
imagination. 
Your Lordship's ‘ Drag Cart, and Method 
of adjusting th.e Centre of Gravity of the 
Load,' are not new in the science of mechanics; 
nevertheless, upon referring to the note of 
the Board which accompanies the communi- 
cation, the merit of your Lordship's discri- 
mination and perseverance in its construdlion 
is fully explained. The skilful physician is 
