376 Field Experiments at Wohurn in 1889 and 1890. 
Tlie swedes were pulled and weighed on December 13, 1889. 
The results were : — 
Plot 
Manures used per Acre 
Weiglit oi Eoots 
(Swedes) per acre 
7 
tons cwt. 
11 13 
qr. lb. 
1 4 
1 
1 Unlimed 
J 5 cwt. basic cinder . . . . 
13 
13 
1 20 
2 
Is cwt. superphosphate . . . 
13 
8 
0 0 
8 
14 
5 
0 0 
3 
2 tons 
r lime per - 
5 cwt. basic cinder . i 
1 cwt. nitrate of soda i ' ' ' 
14 
9 
1 20 
4 
acre 
3 cwt. superphosphate i 
^ 1 cwt. nitrate of soda ) ' ' 
16 
6 
3 12 
9 
] 4 tons 
11 
7 
0 0 
5 
- lime per - 
3 cwt. superphosphate . . . 
14 
5 
1 20 
6 
) acre 
1 cwt. nitrate of soda . . . 
16 
3 
3 12 
Notwithstanding the liming there were on all the plots patches of 
roots affected with " finger and toe." 
From a comparison of the results it would appear that the 
dressing of four tons of lime to the acre had not been effectual, but 
that of two tons had produced decided benefit in each case. A 
similar case of good resulting from the application of two tons of 
lime per acre, and — for the first year at least — of no good being done 
by four tons of lime, was observed in the experiments of the Royal 
Manchester Liverpool and North Lancashire Society three years 
back. 
As between " basic cinder " and superphosphate there is no 
definite evidence of superiority of one to the other, since comparing 
plots 4 and 6 the increase of crop produced over plots 1, 2, and 3 
appears to be due to the nitrate of soda rather than to the phos- 
phatic element. 
IV. Experiments on Potatoes loith Box and Yard Manure 
{made tvith different foods), and with artificial manure. 
After the conclusion of the bullock-feeding experiments of 
the winter of 1888-9, the dung was removed out of the boxes and the 
open yard. It was thought that it miglit be interesting to keep 
the different lots separate and grow with them a crop of potatoes. 
On one side of the boxes four bullocks had been feeding for 145 
days on roots and hay with additional food as follows : — linseed 
cake 2'88 lb., barley 4 lb., and decorticated cotton-cake 3'30 lb. per 
head daily ; on the other side four others had tlie same food except 
that undecorticated cotton-cake was substituted for decorticated. 
In the yard, bean-meal was consumed instead of cotton-cake, but 
the manure made here was of course of indefinite nature, and not 
like that made in the boxes, the approximate composition of which 
