70 TRANSACTIONS OF THE ILLINOIS 



0. C. Gibbs — Will not tile draining lit almost any land for an 

 orcliard ? 



J. M. Robison — No. We occasionally find a tenacious clay soil 

 that cannot be drained unless the drains are very close together. 



Benj. Buckman — I have thoroughly drained with tile a barn- 

 yard, and planted to orchard, which is doing well. I would like to 

 ask of some one who has had longer experience, if the roots of the 

 trees will not enter and choke the tile? 



J. M. Robison — I drained an orchard with tile twenty years 

 ago. I found the roots would run all around the tile and cover the 

 joints, but never enter them and live. The roots die that enter the 

 tile, so the tile never becomes choked. 



T. McWhorter — I am convinced that our orchards suffer more 

 for want of water than from too much of it. 



J. B. Spaulding — 1 have taken a great deal of interest in this 

 discussion; have also had considerable experience in orchard planting 

 and management. Fifteen years ago I tile drained eighty acres in 

 one orchard, putting in the tile twenty feet apart, and I have been 

 well satisfied with the results. On my grounds the depressions 

 always give the poorest trees. They are small and stunted and pro- 

 duce the poorest fruit. 



L. R. Bancroft — I wish to inquire if sprinkling the trees with 

 arsenic water will kill the Plum Curculio? 



Prof. Budd — Mr. Dixon thinks he can control the Curculio by 

 this process in connection with pasturing with hogs. 



A. C. Hammond — Will Prof. Budd give the process of dissolv- 

 ing the arsenic. 



Prof. Budd — It is very simple. He boils the white arsenic in a 

 sorghum pan, one pound in twenty-five or fifty gallons of water, one 

 or two hours, until it is thoroughly dissolved; then dilutes until two 

 hundred gallons of water represents one pound of arsenic. 



