I. AGRICULTURE AND RURAL ECONOMY. 393 



parts of flour (damaged flour being good enough), answers 

 perfectly well, and has proved of such utility as in many 

 cases to have saved the crops. 



Paris green or arsenic, mixed with water, and sprinkled 

 over the plants, has also been used with satisfactory effect. 

 The latter application should be made moist, and before using 

 the former it is desirable that the plants be wet by rain 

 or artificially, in order to cause the dust to adhere to the 

 leaves. The poisons should be applied on the first appear- 

 ance of the caterpillars, and also as soon as possible after the 

 second crop of worms is seen. Caution must be exercised 

 to be on the windward side of the plant when dusting the 

 poison upon it, and not to permit the cattle to feed on the 



foliage. 



Large flocks of turkeys have been found very efficient in 

 destroying both the cotton and the tobacco worms. Hep. 

 Agric. Dept., December, 1873, 575. 



DALMATIAN INSECT-POWDER. 



It is stated by Professor Landerer that the common 

 Chrysanthemum leucanthemum has long been employed in 

 Dalmatia for the preparation of a powder similar to Persian 

 insect-powder, and that this widely diffused weed is now 

 largely employed in Germany for the same purpose, and, 

 with the Chrysanthemum segetum forms a perfect substitute 

 for Pyrethrum carneum and roseum, from which the Persian 

 powder is prepared. These facts may be of sufficient im- 

 portance to justify further experiments with these plants, 

 since Dalmatian insect-powder has recently been found very 

 effective against parasites on sheep and cattle, one pound of 

 it being equivalent in this respect to a pound of arsenic. 

 The Dalmatian powder is now regularly quoted in the drug- 

 gists' lists, and at a higher figure than the Persian. 28 C\ 

 April, 1874,315. 



EFFECTIVE INSECT-POWDEK. 



Powder prepared as follows from the plant used in making 

 the so-called Persian insect-powder is recommended as less 







liable to failure than the commercial article, and not onlv as 

 very effective against moths, fleas, bed-bugs, and poultry ver- 

 min, but also as a useful internal remedy against worms, when 



R 2 



