AS A MANURE FOR POTATOES. 357 
the chief constituents of the marl; affording to 
the peat, those ingredients in which it was defici- 
ent. The drills were prepared by spade labour. 
Had Guano been used, the result would probably 
have been equal. The experiment is worthy of 
trial. 
In the Gardener’s Chronicle, of December 
1842, there is a communication from Mr. Ford, 
of Sheaf House, Sheffield, in which he states the 
results of an experiment on potatoes, made with 
Guano, 1]b. to each row of 15 yards ; the same 
quantity of Nitrate of Soda. Horn-shavings, and 
good stable-dung were also used, and some rows 
were planted without manure. 
The following is the result of these experi- 
ments, with the average of each kind of potatoe. 
They were of three kinds, American natives, 
Short-topped reds, and Prince regents. 
AMERICAN NATIVES. 
lbs. 
With Guano,............... 3 pecks each row ............ 63 
» Nitrate of Soda,... 2 i eile Miss kb a etic 42 
- Horn-shavings, wie edgy Aloe Pri nininae ane eee ot 42 
& Stable-manure, vo 23, Bey frien tei nearly 58 
Without manure, rather more than .....,... Seecereorsiede 42 
3B 
