SUB-WATERING 



AND 



DRY AIR IN GREENHOUSES. 



The President • We will now be pleased to hear from 

 Professor Arthur, who will read the paper he has prepared 

 on Sub-watering and Dry Air in Greenhouses. 



Professor Arthur: I had no idea when I consented to 

 give a paper on Sub-watering, that we would have such a 

 demonstration of the disadvantages of excessive surface 

 watering as we have to-night. Neither had I any idea 

 that I should be called upon to expend so much energy in 

 getting here, and it is doubtful whether I have a reason- 

 able amount of energy left to present a paper. In my 

 paper that I presented a year ago I made the attempt, not 

 to present a new thing, but to present what had been 

 fairly well demonstrated and reasonably well published, 

 but which had not been taken up simply because it had 

 not been brought to the attention of those who should be 

 most interested in it — the practical men — in a way that 



