390 
THE WOBURN EXPERIMENTAL 
STATION OF THE ROYAL AGRICULTURAL 
SOCIETY OF ENGLAND. 
FIELD EXPERIMENTS, 1913. page 
CONTINUOUS WHEAT 391 
CONTINUOUS BARLEY . 393 
ROTATION EXPERIMENTS — THE UNEXHAUSTED MANURIAL 
VALUE OE CAKE AND CORN 396 
GREEN-MANURING EXPERIMENTS 398 
VARIETIES OP OATS ........ 399 
BARLEY EXPERIMENT DIFFERENT RATES OF SEEDING . 400 
NITROGENOUS TOP-DRESSINGS ON WHEAT .... 401 
MAGNESIA EXPERIMENTS ON WHEAT ..... 402 
CLOVER AND GRASS MIXTURES ...... 404 
VARIETIES OF LUCERNE ....... 405 
VARIETIES OF RYE-GRASS 406 
INOCULATION OF LEGUMINOUS CROPS ..... 407 
SOYA BEAN 4Q7 
LINSEED .......... 407 
GRASS EXPERIMENTS 408 
DUNG-MAKING EXPERIMENT 410 
RAINFALL AT WOBURN, 1913 411 
POT-CULTURE EXPERIMENTS, 1913 411 
I. Hu As’ Experiments : — 
(a) The influence of Zinc Salts on Wheat . . .411 
( b ) The influence of Copper Salts on Wheat . . . 414 
(c) The influence of Manganese and Cerium Salts on Wheat 417 
II. The Relation of Lime to Magnesia in Soils : 
The addition of Lime to a soil rich in Magnesia . .417 
III. The use of Sulphur as a Fertiliser . . .419 
IY. Experiments on Tomatoes : — 
(a) On yiatural and heated soil with addition of Lithium 
Phosphate . . . . . e _ .419 
(5) On natural and heated soil with addition of Magnesia 419 
FIELD EXPERIMENTS, 1913. 
The season of 1913 was an improvement on those of 1911 and 
1912. At the same time it was one not unattended with 
difficulties, for, after a favourable time for the sowing 1 of 
wheat, the sowing of barley was much delayed owing to the 
land not being sufficiently dry. A late period for the 
germination of spring corn was followed by drought throughout 
June and the early part of July. This caused the corn^to be 
