S8i Field Experiments on Root-Crops. 
Eesults of IMaxgold Experiments at Escrick, nca.v York, in 
1870. 
Manure used. 
No !RIanure 
Mineral Superphosphate 
Mineral Superphosphate , 
and 
Muriate of Potash 
Mineral Superphosphate 
and 
Peruvian Guano 
Peruvian Guano 
No Manure 
Mineral Superphosphate 
and 
Muriate of Potash 
and 
Sulphate of Ammonia 
Rotten Dung 
Mineral Superphosphate 
and 
Muriate of Potash . . 
and 
Nitrate of Soda . . 
Rotten Dung 
and 
Mineral Superphosphate 
Bone Dust 
and 
Mineral Superphosphate 
No Manure 
Produce per 
Plot of 
cwts. 
14 
17 
lbs. 
28 
0 
19 84 
18 0 
18 
16 
0 
28 
20 28 
19 56 
18 28 
18 28 
15 84 
16 0 
Produce per 
Acre. 
tons cwts. 
14 5 
17 0 
19 15 
18 0 
18 0 
10 5 
20 5 
19 10 
18 5 
18 5 
15 15 
16 0 
Increase per 
Acre 
over average 
produce ot 
Unmanureil 
Plats. 
tons cwts. 
1 10 
4 5 
2 10 
2 la 
4 1& 
4 O 
2 15 
2 15 
0 5 
Experiments on Mangolds made hy Mr. Thomas Broion, Grimston, 
King's Lynn, in 1870. 
The last series of experiments on wliich I have to report were 
carried out in accordance with my instructions by Mr. Thomas 
Brown, of Grimston, King's Lynn, who informs me that the soil 
of the experimental plots was in a good agricultural condition. 
The surface-soil has a depth of about 2 feet, and rests upon chalk. 
It yielded a good crop of wheat in 1869, and was cropped in the 
preceding year with turnips, which crop, however, owing to the 
exceptional drought in 18G8, was a failure. 
The turnips received 12 tons of farmyard-manure and 4 cwts. 
of home-made superphosphate per acre. The wheat-crop had no 
farmyard-manure, but was top-dressed with 2 cwts. of guano and 
2 cwts. of salt per acre. 
Mangolds, it is well known, are sometimes manured with very 
large quantities of farmyard-manure, as well as guano and other 
