156 ANNUAL REPORT OF THE Ofe. Doc. 



A number of persons have cleaned up their orchards by this 

 method. Among these is Mr. P. M. Amberson, of Waynesboro. It 

 is not necessary to spend time, or to injure the trees by cutting with 

 a knife or attempting to follow the holes of the borers with a pliable 

 wire. This information is worth a great deal to the owners of young 

 apple, pear and quince trees who in many cases find both the round- 

 headed and flat-headed borers to be among their veiy worst pests. 



As a means of preventing the borers from entering the trunks of 

 trees, we find that an application of the lime-sulfur solution, with 

 the sediment present, made and applied as for the peach-tree borer, 

 is efficient and is hereby recommended. We have further proven the 

 value of pure white lead and linseed oil as a paint, made about as 

 thick as house paint and applied about the middle of June. All 

 preventive washes of this kind for borers should be applied about 

 this date. Oil paint should not be applied to trees that are declining 

 or feeble, but can safely be used on those that are Angorous. It is 

 not recommended for peach and plum, and is really not needed for 

 these, as the lime-sulfur is efficient, if frequently and properly used. 



Other investigations and experiments are being conducted but 

 have not yet reached such stage of conclusion as to justify a report 

 upon them. It is to be hoped that we shall have funds sufficient for 

 assistance capable of conducting some further experiments in this 

 line during the coming year. 



3. PUBLICATIONS 

 The publications of this office have been chiefly as follows: 



(a) The regular Bulletin, which was changed from a monthly to 

 a bi-monthly, and which has appeared regularly, and seemed to be 

 even more successful and gratifying to the public and in the monthly 

 form. The subjects discussed in the respective numbers of Volume 

 I of the Bi-monthly Bulletins for the past year were as follows: 



January, Formulae. Pests and their treatment. 



March, San Jose scale. Spraying Apparatus and Material. 



May, Model Orchard Work in Pennsylvania. 



July, Economic Entomology. Short Articles. Part I. 



September, Economic Entomology. Short Articles. Part II. 



November, Zoological Conservation. Business Features of Horti- 

 culture. Index to Volume I. 



The last number of the Volume was fully indexed, giving the sub- 

 jects and pages treated in the entire volume. Some extra copies were 

 published for distribution to those who have not already received 

 them. 



Cb) Our Annual Report. Further publications of this office con- 

 sisted of the Annual Report, the Report of the Ornithologist of the 

 State Board of Agriculture, who is also your Economic Zoologist, 

 a number of special articles written for magazines and journals, and 

 circulars, and the Weekly News Letter. 



(c) Circulars. This office has found it very helpful to issue a series 

 of one-page circulars, which can be inserted into envelopes and used 

 in correspondence work to answer most of the inquiries that would 

 come along the lines of certain topics. Those which were prepared 

 d^r*5ig the past year were as follows: 



