THE ONION FLY. 325 



damage, employ the poisoned ball system, which, in brief, 

 consist in placing along the rows, at a distance of 15 or 20 

 feet apart, small bunches of fresh cut grass or other green 

 plant; cabbage leaves answer a good purpose. These 

 bunches of grass or green plant should be previously sprink- 

 led with Paris green or London purple. Should the worms 

 still appear in great numbers by migration from surround- 

 ing fields, sprinkle the ground at night, while the worms 

 are at work, with a diluted emulsion of kerosene. A Goshen 

 grower has used pure kerosene for killing the worms, simply 

 blackening, not killing, the onion tips. The free use of 

 pure kerosene may injure the plants, hence an emulsion is 

 recommended as safer and cheaper. The kerosene is emul- 

 sified with soap or milk in order that it may readily dilute 

 with water. There is little doubt but that by some spray- 

 ing of the fields at night with this mixture the worms can 

 be destroyed by wholesale. It should be used most thor- 

 oughly at the points in the field where the worms are first 

 noticed at w r ork, and from which they spread to surround- 

 ing points." 



Some other crops which are found profitable under va- 

 rious local circumstances, are CELERY, which succeeds to 

 perfection upon reclaimed muck swamps and black bottom 

 soil; MUSK AND WATER MELONS, which require a similar 

 culture to that of cabbages; TOMATOES, which are grown 

 in the same manner as potatoes, but require the whole sea- 

 son to mature; and CUCUMBERS, which are in demand for 

 pickling. All these crops may be made very profitable by 

 good culture, and will come conveniently and usefully in a 

 rotation as a fallow and manuring crop; benefiting the soil; 

 destroying weeds; and preparing the land for a succeeding 

 crop. 



It is not alone the business of the good farmer to study 

 his art, to practice every known device, and apply every 

 fact he may learn to increase the produce of his land, and yet 

 leave it improved in condition, or at the least no worse for 

 the enlarged products; but it is also his business to choose 

 such crops as he can make most profitable; watching the 



