xii r 



XXV Crops: Experimentation Connected therewith. 



MARION I. NEWBIGIN, Evolution and Spread of Food-plants. Page 236 



STAFF OTTO, The History of the Wheats 236 



J. G. STEWART, Report on trials with Varieties of Wheat . . . 237 



CH. E. SAUNDERS, The Inheritance of Strength in Wheat. , . 238 

 A. D. HALL and E. J. RUSSELL, The Factors Determining the 



Yield of Wheat , 2 3$ 



Experiments with Wheat , 2 39 



Wheat Experiments in Staffordshire and Shropshire in 1909 . . 240 



R. B. GREIG, Oat and Barley Experiments, 1909 . , 240 



Report on Oat and Barley Experiments, 1909. . 240 

 W. R. DUNLOP, The Utilisation of Barley Straw in the Manufac- 

 ture of Ensilage 2 4 r 



Varieties of Oats - 2 4 T 



R. P. WRIGHT and A. M. M'ALPINE, Report on Variety Tests of 



Oats, in Scotland 2 42 



R. X. SALAMAN, Male Sterility in Potatoes, a Dominant Mende- 

 lian Character, with remarks on the Shape of the Pollen in 



Wild and Domestic Varieties 243 



Effect of a Change of Locality on the Vigour of the Potato Plant 243 



Planting Potatoes 2 43 



R. P. WRIGHT, Effects on planting Sprouted Tubers on the Yield 



of the Potato Crop 2 44 



W. BRUCE, Experiments with Potatoes, 1906-1908 . . . . 244 

 E. PORTER and R. C. GAUT, Summary of Experiments on the 



Manuring of Potatoes in Lancashire 245 



R. B. GREIG, Effects of the New Nitrogenous Manures on Pota- 

 toes and Hay 245 



Manuring the Potato Crop , 246 



R. B. GRIEG, Turnip Manuring Experiments, 1909 246 



Turnip Manuring Experiments, 1908 246 



Varieties of Swedes 247 



Manuring of Swedes in Cumberland and Westmoreland. . . . 247 



Varieties of Mangolds , 248 



Manuring of Mangolds and Swedes 248 



Manuring of Mangolds 249 



Manuring of Mangolds at Cirencester 250 



Experiments of Roots, etc. by the Midland Agricultural and Dairy 



College 250 



Produce of Grass and Yield per Acre in Great Britain in 1909 . 251 

 DOUGLAS A. GILCHRIST, Trials of Wild White Clover. Clover- 

 Sickness 251 



A. N. Me' ALPINE, Grasses 255 



Mr. William Carruthers, the Botanist. His Work from 1871 to 



1909, Improving Pastures , 255 



R. STAPLETON, On the Flora of certain Cotswold Pastures . . 257 



Manuring of Seeds Hay . . . . , 2 5 S 



