Meport on the Field and Feeding Experiments at PFoburn. 345 
minerals and 200 lbs. of ammonia-salts, but doubling the quantity 
of nitrate of soda gave 55 4 bushels only as against 57*8 bushels 
with minerals and the single quantity (275 lbs.). The nitrate 
of soda, however, gave 8 cwts. of straw per acre more than the 
ammonia-salts. 
The results, 59'3 bushels and 55*4 bushels, were obtained on 
plots 8b and 9l3, from which in 1883 all nitrogenous manures 
had been omitted, then giving 35"2 and 35 9 bushels re- 
spectively, so that the effects of the ammonia-salts and nitrate 
of soda were very marked. On now withholding nitrogenous 
manures from plots 8a and 9a which in 1883 had produced 
respectively 62*5 and 60'9 bushels, the yield fell to 46'4 and 
37 -2 bushels. As in the case of the wheat, the fall when am- 
monia-salts were withheld was hardly so pronounced, but very 
clear when no nitrate of soda was given. The dung applied in 
1881 seemed still to have Some effect on the barley crop, and 
4 tons put on in 1884 gave no increase, but where 8 tons were 
applied in 1884 the produce was largely augmented. 
The Experiments in Rotation. 
notation No. 1. — Four acres. 1877, seeds; 1878, wheat; 
1879, mangolds; 1880, barley; 1881, seeds; 1882, wheat; 
1883, swedes. 
Barley, 1884. — The swedes grown in 1883 were fed off by 
sheep which were put on November 3rd, 1883, and finished on 
March 26th, 1884. 
The previous swede crop of 1883 had been manured per acre 
as follows : — 
Tlot 1. — "With dung, made from 1350 lbs. straw as litter ; 5000 lbs. 
mangolds ; 1250 lbs. wheat-straw chaff, and 1000 lbs. decorti- 
cated cotton-cake. 
Plot 2. — With dung, made from 1350 lbs. straw as litter; 5000 lbs. 
mangolds; 1250 lbs. wheat-straw chaff ; and 1000 lbs. of maize- 
meal. 
Plot 3. — With dimg, made from 1350 lbs. straw as litter ; 5000 lbs. 
mangolds; 1250 lbs. wheat-straw chafl'; and artificial manure, 
containing two-thirds as much nitroj;cn, and the other consti- 
tuents, of the manure from 1000 lbs. decorticated cotton-cake: 
namely, 248 lbs. nitrate of soda, 100 lbs. of bone-ash (made 
into superphosphate), 62j lbs. sulphate of potash, and 65 lbs. 
sulphate of magnesia. 
Plot 4. — With dung, made from 1350 lbs. straw as litter; 5000 lbs. 
mangolds; 1250 lbs. wheat-straw chaff; and artificial manure, 
containing as much nitrogen, and other constituents, as the 
manure from 1000 lbs. maize-meal ; namely, 80 lbs. nitrate of 
soda, 16i lbs. bone-ash (made into superphosphate), 7 lbs. 
sulphate of potash, and 11 lbs. sulphate of magnesia. 
