354 OBSERVATIONS ON GUANO 
part of the potatoes were rotten. These were 
of the white skinned kind, while those of a dark 
colour No. 3, which grew in a parallel direction, 
were unaffected. 
I have endeavoured to ascertain the quantity 
of potatoes produced in different localities, and 
in soil of similar quality, in order to discover the 
relative difference of each, as to productiveness. 
No. 6. In a field adjoining mine, 33 linear 
yards, produced 80lbs. of the same kind of pota- 
toes as Nos. 2 and 3, cow-dung and night-soil 
used. 
No. 7. In my own field, the crop of potatoes 
called pink-eye farmers, averaged one load in 
every 72 yards, manure employed—horse and 
cow-dung, with night-soil. 
No. 8. Mr. Bell, the intelligent manager of Mr. 
Baines’s farm on Chat Moss, states, that the aver- 
age produce of potatoes, whether manured with 
Guano or night-soil, was 80 loads per statute acre. 
No. 9. A farmer on Trafford Moss informs me, 
that his crop this year, will amount to 1 load for 
