AS A MANURE FOR POTATOES. 361 
From the superior method of cultivation now 
practised in Ireland, it is probable that the pro- 
duce is much greater than in Mr. Wakefield’s 
time. 
M. Payen, the eminent French Agricultural 
chemist, has given an account of the produce of 
seven kinds of potatoes, all grown on the same 
kind of Jand.* 
THE VARIETIES ARE THE FOLLOWING: 
Rohatp-daeapsciececans are 142 tons per acre. 
Large Yellow, ......... 93 99 a: 
Seotch sy c.ctcstecssce cece 8 Pe Fs 
Slow/ Islands ts. sseee 14 a ss 
LGEODARG Hi cn eons spcnnaes 8 9 9» 
SIDELIANS | 1" scseestescseees 10 se os 
Duyillers,) .sccccsscsseac 10 fs an 
The Rohan and Slow Island may be considered 
as equal in productiveness to the Farmer, one of 
our most common potatoes. I planted the Rohan 
for two years, but discontinued it from its inferio- 
rity to the Farmer in its farinaceous properties. 
* For some of these statements, I am indebted to a volume 
lately published, entitled, “ The Industrial Resources of Ire- 
land,” by Robert Kane, M. D. A valuable statistical work. 
