terial, that it be spread lightly and evenly upon the plants. 

 Probably ten pounds or 4.5 kilos of the mixing agent will be 

 most satisfaetory in most instances. Regular machines for 

 applying dust sprays may be had upon the market. However, 

 they may be considered as a luxury unless there is considerable 

 work to be done. In the absence of a dust sprayer a bag made 

 from loosely woven cloth through which the insecticide may be 

 shaken, or a tin can with mail holes in the bottoni, to be opera- 

 ted in the same way, will suffice. Dust sprays should be applied 

 when the foliage is wet with dew, or directly ofter a shower. 



Probably the dust form of Paris green spraying will find 

 greater application in Cuba to the tobáceo crop, for the des- 

 truction if the horn worm of Primavera, Protoparce Carolina L. 



WHITE ARSENIC. — This material is very valuable as an 

 insecticide in Cuba. It is cheap in price and usually may be obt- 

 ained with little difficulty. The principal use to which it may 

 be put is in the preparation of poison baits, it being barred 

 from liquid applications to any but the most hardy plants on 

 account of it's caustic properties. 



POISON BAIT. — Many of the grass lands are infested with 

 cut worms, and when the sod is broken and the field planted the 

 worms tura to the new crop and often completely devour it. 

 Where intensive farming is practiced it is often advisable to 

 rid the land of the pests and for this purpose the poison bait is 

 the most effective. The economy of the practice is questiona- 

 ble for use upon any but crops yielding high returns. 



English Metric. 



White arsv.nic or Paris green . . 1 Ib. or 454 grms. 

 Bran or corn meal 50 lbs. or 22.5 kilos. 



Mix dry ingredients and add water to moisten but not to ma- 

 ke sloppy. To rid the field of the worms, deposit a table spoon 

 full for every square yard of space, after plowing and before 

 the crop is planted. 



Por the protection of thickly set young plants, should the 

 attack come after they are growing, deposit a tablespoon full of 



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