REMEDIES AND PREVENTIVE MEASURES. 



the oil-pipe being within the air-pipe, and both pipes meeting at the point of dis- 

 charge, at the nozzle. The plunger or piston of the oil-pump is actuated bj a rod 



Fig. 27.— Atomizing machine invented by John Bowles, "Washington, D. C. 



pivoted to the board h, at a point that will give the oil-compresser such increased 

 leverage as may be demanded for its proper discharge. 



PRUNING AND BURNING. 



The old and well-tried remedies of pruning; or burning, or pruning 

 and burning, will answer every purpose against the Web-worm in ordi- 

 nary seasons, where it is thoroughly done and over a whole neighbor- 

 hood. It must, however, be done upon the first appearance of the 

 webs on the trees, and not, as was done by the Parking Commission of 

 this city last season, after the first brood of worms had attained their 

 full growth and many had already transformed to pupa*. The i 

 at that time had assumed large proportions, and their removal entire 

 injured the appearance of many young trees. Then, too, they were 

 piled upon an open wagon, which was dragged for many hours around 

 the streets, permitting a large proportion of the worms to escape. 



On the first appearance of the webs, which should be looked for with 

 care, they should be cut off or burned oil, and if cut off they should be 

 burned at once. The "tree primers. " manufactured for the trade and 

 well known to all gardeners, answer the purpose admirably. 



The customary method of burning the nests is by means o\ l 

 saturated with kerosene or coal tar and fastened to the tip of a long 

 pole. An old sponge has been substituted to advantage for the rags, 

 but probably the best substitute for this purpose is a piece o( porous 

 brick. In a pointed communication published in the Evening Slur, of 

 August 21, Major Key, agent of the Humane Society, thus describes 

 the making of a brick torch: "Take a piece of BOfl brick, commonly 



