Show r l Burning Is Sometimes I t t Produced by Oil Sprays In e investigating ti the burning sometimes sometimes sometimes some some- times produced In using oil sprays George Georgc P P. P Gray chief of the division If 1 of if chemistry of or the Iowa State DeL Department De De- L r of A Agriculture has discovered disco t red erect that the burn Is not produced liy by ph characteristics of the oil I l ut chemical compounds known to tot t I chemists as cracked oils These are t the he constituents responsible for the offensive odors from burned gasoline fir or r kerosene and the cutting of oe engine l f I By ily treating the oil w with Ith i acid they are removed The k t f test for Cr mineral oils t t sed cd as Insecticides wll show the pres pres- once nee or absence of these cracked t oils nils This Mr Gray believes may lead to the manufacture or of oil sprays i tc which will not burn foliage c or fruit when used as spra sprays s. s |