142 ■ ANNUAL, REPORT OF THE Off. Doc. 



means of controlling it is the boiled lime-sulphur wash, applied in 

 two thorough coats or sprays shortly before the buds burst in the 

 spring. This is fully discussed in our Bulletins for November, Dec- 

 ember and February. 



3. PUBLICATIONS. 



The publications of this office have consisted of the Monthly 

 Bulletins of the Division of Zoology, which have been issued regular- 

 ly each month, an Annual Report, illustrated Address on Bee-Keep- 

 ing, delivered at the Clearfield Meeting of Farmers' Institute Work- 

 ers, a Bulletin on Bee-Keeping, being the First Annual Report of the 

 State Bee-Keepers' Association, Addresses in the Publication of the 

 State Horticultural Association occasional Circulars and several 

 Newspaper Articles. 



Of course, our chief means of publications has been brought 

 through the Monthly Bulletin of this Division, The prime 

 object of this Bulletin has been to give farmers a timely 

 publication concerning pests and items of interest and im- 

 portance concerning their crops or work for the particular 

 month of each respective issue. By issuing the Monthly 

 Bulletin regularly and periodically we have been able to 

 save a great amount of postage, for the reason that this has give/i 

 us a second class rate, and the postage on these Bulletins can be 

 paid by the pound, whereas if they were issued at irregular intervals, 

 each copy mailed to any individual could go only by bearing its own 

 postage stamp. 



The Quarterly Bulletin was discontinued for the sake of economy, 

 last year, with the issue of May Bulletin, No. 1 of Volume III., but 

 the subjects treated in the Quarterly Bulletins, viz., the Economic 

 Features of Pennsylvauian Vertebrates, have been continued in 

 occasional issues of the Monthly Bulletin, 



In these Monthly Bulletins are contained not only timely articles 

 on insects, zoology, farm operations, plant diseases, etc., but also 

 the results of our investigations and experiments, and formula for 

 insecticides and fungicides. A regular system has been followed. 

 For example, the May number is devoted to a condensed series of 

 Formulre; the June number to Insects and Plant Diseases infesting 

 most cultivated trees and shrubs; the July number to Scale Insects, 

 Plant Lice and other summer pests; the August-September number 

 to some feature of Vertebrate Zoology; the October number to Fall 

 Pests of the Farm; the November number to the San Jos6 Scale, 

 with special reference to Winter Remedies; the December number 

 to some educational subject in Zoology; the January number to 

 Nursery and Orchard Inspection; the February number to Spring 

 Remedies for the San Jos^ Scale and the March and April numbers 

 to spring and Summer Pests and General Zoology. 



The most unique publication that we have issued has been our 

 August-September Bulletin for 1906, which was on ''The Serpents of 

 Pennsylvania." This Bulletin contained more facts concerning the 

 habits and food of our native serpents than has ever before been 

 put into print, and no less an authority than Dr. Stejneger, the 

 herpetologist of the U. S. National Museum, has said that this is 

 the only publication in the world upon the food and economic feat- 

 ures of such creatures. It was certainly received most cordially 



