352 Journal of Agriculture, Victoria. [lo June, 1912. 



As transpiration experiments of other countries seemed unlikely, for the 

 reasons stated, to be of direct application to Australian conditions, some 

 test pots were set out at Burnley Horticultural Gardens during the past 

 season. Wheat and oats were selected, and the general method adopted 

 was that already described. The pots, which were adapted to the 

 Wagner pattern, contained 37 lbs. i oz. of dry soil, made up to contain 

 i8.5 per cent, of water (equal to 50 per cent, of the total water-holding 

 capacity reckoned on the soil volume). The pots were watered on the 

 scales with a fine spray. The amount of water transpired by the plants 

 was got by deducting the loss of weight in similar fallow pots. To avoid 

 rain, the pots were placed under cover in the best position available; but, 

 soon after starting, it was evident there was too little light, and the wheat 

 pots were discarded. The "growing oats suffered less. The experiments 

 lasted 159 days, starting from 6th September. Fig. i shows some of the 

 pots at the time of harvesting, on 13th February. 



Fig. 



At harvest, the crops were cut off close to the ground, dried, and the 

 transpiration ratios calculated out. The results were as follows: — 



Table II. 



