42 



moved. January 27-29 nine hundred dwarf pears were sprayed 

 with kerosene emulsion, a part of it containing- twenty per cent, of 

 kerosene, and the remainder, by mistake of an assistant, fifty per 

 cent. With this latter streng-th over one hundred trees were treat- 

 ed. Two years later, February 28 and March 4 and 5, 1902, all 

 these orchards were critically examined and only a few scattering- 

 scales were found. The trees treated with a fift}^ per cent, emul- 

 sion had not been injured in the least. It should be said that this 

 orchard was in excellent condition, its owner being- an experienced 

 and careful fruit g-rower, and everything- was consequently favora- 

 ble to eiTective work. 



No. 13. January 25 and 26 thirty-five larg-e trees were fumi- 

 g-ated in an infested orchard of apple and peach belong-ing- to S. I). 

 Newcomb. March 15, 1902, Inspector Braucher reported that 

 eig-hteen trees were slig-htly infested, but less so than two years 

 before. 



No. 14. Nineteen trees were fumig-ated January 26 in an in- 

 fested apple orchard belong-ing- to Edward Aplin, and some peach- 

 trees were destroyed at the owner's request. March 14, 1902, a few 

 slig-htly infested trees were found. 



No. 15. January 26 nineteen trees were fumig-ated on Mrs. R. 

 R. S. A^asey's place, and February 6 one very larg-e tree was spray- 

 ed with kerosene emulsion. March 14, 1902, three slig-htly infest- 

 ed trees were found by my inspector on these premises. 



No. 16. On Dr. W. Sraeaton's place, in charg-e of L. D. Allen, 

 sixty-seven trees, mostly peach and some of them badly infested, 

 were fumig-ated January 27. This place was inspected March 12, 

 1902, and a few trees found slig-htly infested. A hedge on the 

 place was now infested and required treatment. 



No, 17. January 26 an infested tree on the place of Mrs. 

 Simeon Shinall was fumig-ated, but an inspection of it March 15, 

 1902, showed it to be slig-htly infested. 



Coinnicut on Die above Results. — The foreg-oing- statements of 

 conditions found at Sparta and at Richview are not strictly com- 

 parable with each other because the inspection at Sparta was 

 made in September, l')00, eig-ht or nine months after the insecticide 

 treatment, and that at Richview was made in February and 

 March, 1902. The Sparta reg-ion was inspected in the midst of the 

 first g-rowing- season after the trees were treated and before the 

 time of most rapid multiplication of the scale, — which is usually 

 the month of October in southern Illinois, — while the Richview 

 inspection was made after a lapse of two complete seasons of 

 growth and multiplication. 



