THE BROAYX-TAIL MOTH. 65 



otherwise burning of the foliage will occur. In using Paris 

 srreen, it should be borne in mind that this insecticide has a 

 high specific gravity and settles rapidly in the spraying 

 tank, hence it should be stirred continually Avhile being- 

 applied. 



Kerosene emulsion, useful in destroying caterpillars jarred 

 from trees, and on fences, walks, etc., is made by dissolving 

 1/4 pound hard soap in 2 quarts of water, and adding to the 

 solution, while hot, 1 gallon of kerosene oil, stirring the 

 whole, or pouring it rapidl}^ from one pail to another until 

 a stable white emulsion is formed. This emulsion for use 

 on the caterpillars should then be diluted at the rate of 1 

 part emulsion to 5 of water. At this strength there will be 

 some injury from the kerosene to grass and other foliage, 

 but the effect on caterpillars will be more satisfactory^ than 

 where the normal dilution of 1 part to 9 of water is used. 



Apparatus. 



The damage by the brown-tail moth is as severely felt in 

 proportion to the value of the crop in the kitchen garden as 

 on the farm. In fact, owing to the scarcity of native in- 

 sect-eating birds in our cities, injury by caterpillars of 

 this class is sometimes more severe in cities than in the 

 open country. While the city owner requires the same 

 spraying materials as are used on the farm, his needs in the 

 line of apparatus are much less. 



For use in a kitchen garden or on a small estate, excel- 

 lent results in spraying can be obtained from a brass 

 syringe, such as is connnouly used in greenhouses for 

 showering plants. A suitable syringe can be bought for 

 about $4, and by its use vegetables and fruit trees of good 

 size may be sprayed satisfactorily. 



On larger estates, and particularly where shrubbery has a 

 prominent place, no outfit is more convenient and generally 

 useful than a cop})er knapsack spray pump. AVe might add 

 that nothing is more wearisome to the fiesh than to carry 

 one of these outfits on a hot day, but such labor often i)ays 

 bW dividends. The writers would advise aiiainst the i)ur- 

 chase of galvanized-iroii knapsacks : these soon rust out, 



