PRACTICAL HINTS TO NURSERYMEN 123 



from escaping. In order to lower wagon, trenches 

 should be made to allow wheels to drop down. Our 

 canvas is 32 x 38 feet. This is a large sheet and un- 

 wieldly to handle unless parties know how it should 

 be done. Our method is to place the sheet behind the 

 wagon, doubling the front end back over the other. 

 To the corners of the top 'canvas fasten poles long 

 enough to clear the load. Fasten lines at ends of 

 poles, and when ready to raise have men pull the 

 ropes. The air will be of great assistance, and if 

 quickly done the canvas will sail over without friction. 

 Our experience has been that hydrocyanic acid gas 

 properly applied is certain death to all insect life. ' * 



Points to remember. i. Never let a tree go out of 

 the nursery unless it has been fumigated. 



2. Never fumigate a tree on which there is known 

 to be a San Jose" scale. The furnace, and not the 

 fumigating house, is the place for such trees. A dead 

 scale on the tree is just as demoralizing to the nursery 

 business as a live one if seen by the buyer. 



3. Never use the gas stronger than 0.25 gramme 

 cyanide per cubic foot on any kind of nursery stock. 



4. Never leave the trees exposed to the gas longer 

 than an hour. Thirty to forty-five minutes is suffi- 

 cient. 



5. Never fumigate trees, especially peach, a second 

 time. 



6. Never fumigate trees in a car, box, or cellar after 

 they are packed. 



7. Never fumigate trees when they are drenching 

 wet. They may be moist, even quite damp. 



