184 Forty-fifth Report on the State Museum. 



have then ten gallons of the liquid ready for use. The wash should be 

 thoroughly applied with a swab or brush around the base of each tree, 

 taking pains to have it enter all crevices." 



Mr. Bateham gives for his locality (about 42 degrees of N. latitude), 

 as the proper time to apply the above, during the last of June, if the 

 weather is hot, or the first of July. He had never seen the moth 

 depositing its eggs before the last-named date, and if eggs had been 

 deposited a few days earlier, he claims that the wash would kill them 

 at once. 



Carbolic Acid and Paris Green Wash. 



Mr. J. H. Hale, a successful peach-grower m South Glaston- 

 bury, Conn., has recommended in a paper published in the Trans- 

 actions of the Massachusetts Horticultural Society, for 1888 

 (Part I, p. 66), a wash for the prevention and killing of the 

 peach-tree borer, which would seem, on some accounts, to be 

 even preferable to the preceding. He represents the egg-laying period 

 of the moth to commence in the latter part of May, and continuing 

 into September. On rare occasions he had seen the moth deposit eggs 

 in the crotches of the larger limbs. Has this been observed, or the 

 larvae found in such localities by any one else ? 



The objects sought in the wash are: first, to smooth the bark; second, 

 to prevent oviposition; and third, to kill the egg or larva if oviposition 

 has occurred. The exact proportions are not very important. To a com- 

 mon bucketful of water take two quarts of strong soft soap, half a pint 

 of crude carbolic acid, two ounces of Paris green, first reduced to a 

 paste, with water and lime enough to form a thin paste that will adhere 

 to the tree. A little clay may be added to assist in making it stick. 

 Apply with a swab or brush before the first of June. 



Killing the Borer. 

 Although the above is given as almost a sure preventive, Mr. Hale 

 recommends that in addition, the tree should be examined in October, 

 and where traces of the borer are discovered, as in exuding gum or the 



sawdust-like castings at the base of 

 the tree, remove a little of the earth, 

 scrape off the gum with a sharp knife, 

 cut away the bark, and with a piece 

 of wire follow up any channel that it 

 does not seem best to cut open, crush 



Fig. 34.— Larva, cocoon, and pupa of . , , . , , . 



Sanninaexitiosa (after Emmons). or draw out the larva, which at this 



time will be from a half-inch to an inch long. [The full-grown larva, 

 its cocoon, and the contained pupa are shown in Figure 34.] 



