108 INJURIOUS INSECTS OF 1903. 



19. Creolin — 



Commercial Creolin is a blackish brown liquid, cost- 

 ing about 25 cents a pint. This is highly recommended 

 for dog fleas, which sometimes become very annoying 

 pests in dwelling houses. As the cat and dog* is the 

 source of the pest, these animals must be rid of the in- 

 sects. The animals should be washed thoroughly with a 

 mixture of creolin and water. For dogs a 3 per cent solu- 

 tion should be used, or four tablespoonfuls to a gallon of 

 water; for cats a 2 per cent solution, or two tablespoon- 

 fuls of creolin to a gallon of water. Get the creolin well 

 mixed with the water before using. (New Hampshire 

 Bui. 94, 1902.) 



20. Criddle Mixture — 



This mixture has met with great success in Manitoba 

 as a remedy against grasshoppers. 



Formula: « 



Paris Green, i part ; 



Salt, 2 parts ; 



Horse manure, 100 parts (by measure). 

 Mix the Paris Green with the water; mix this through 

 the horse manure and then add enough water to make a 

 soft but not sloppy mash. If the horse manure is fresh 

 the addition of the salt is not necessary. L^se as the Ar- 

 senic Bran Mash, i. e., simply scatter the mixture over the 

 land where the " 'hoppers" are thickest. It is most ef- 

 fective when spread in hot, sunny weather. See also p. . 



21. Crude Petroleum — 



"Crude Petroleum is an oily, inflammable liquid, vary- 

 ing in color from very dark brown to greenish tints. 

 By refining it yields a number of valuable products, in- 

 cluding paraffin, lubricating and illuminating oils and a 

 series of highly volatile oils. It is the heavier oils that 

 make it especially valuable as an insecticide. Crude pe- 

 troleum varies in appearance and composition according 

 to the locality from which it is taken. The eastern oils 

 are said to vary greatly from the western and most for- 



