360 Kharak Singh . — Development of Root System of Wheat . 
Summary. 
1. Wheat plants in pots show better growth when watered from below 
than when watered from above. The difference is greater in light soil 
in the early stages of growth ; but it is more marked in heavy soil in the 
later stage of growth. 
2. Under the experimental conditions the development of root and 
shoot was best in pure sand provided it was supplied with an adequate 
amount of water and was underlaid by a layer of farm-yard manure. 
3. The growth of wheat is better in a mixture containing 25 per cent, 
sand and 75 per cent. Rothamsted soil than in pure Rothamsted soil or in 
a mixture of 50 per cent, sand and 50 per cent. Rothamsted soil. More- 
over, wheat plants do not grow well in brick- powder even when underlaid 
with a layer of farm-yard manure ; observations here put forward are of 
a somewhat preliminary nature. 
In conclusion, I wish to express my sincere thanks to Dr. W. E. 
Brenchley for her help during the investigations and for facilities provided 
for conducting the experiments. 
