No. 6. DEPARTMENT OF AGRICULTURE. 157 



Destruction and Treatment of San Jose Scale. 



Oyster-shell and Scurfy Scale. 



Lecanium Scale. 



Woolly Aphis. 



Borers. 



Pear Blight, Black Knot and Peach Yellows. 



Curculios. 



Codling Moth. 



Canker Worms. 



Tent Caterpillar. 



Bud Moth. 



Aphids or Plant Lice. 



Apple Seed Chalcis. 



(d) The Weekly Press Letter. With the exception of our Bi-monthly 

 Bulletin, by far the most important publication of this office has 

 been the Weekly Press Letter. This is our letter prepared weekly 

 in printed galley or proof form, and sent to the newspapers of the 

 State, ready for copying. It has been prepared regularly, and issued 

 on time every Tuesday morning. Generally about three short articles 

 are treated in about one-third column each, making about one column 

 of newspaper articles that are appropriate to the season and con- 

 ditions in this State. 



The publishers of papers have come to regard it as a regular con- 

 tribution of matter of interest and of great value to their readers, 

 and most of the newspapers in this State now regularly hold space 

 for this letter and maintain a '^Department of Plant Pests" by using 

 it. It is sometimes copied in some of the leading newspapers of the 

 United States, and occasionally used in the various horticultural and 

 agricultural journals. 



This was the best plan that we have ever devised or known to 

 be used for reaching the public with popular, timely articles. It has 

 been very inexpensive, since the cost of publication, envelopes, and 

 mailing is much less than one dollar per week. The great value in 

 this service is in the fact that we have the co-operation of the news- 

 papers, and thus the good work of this office is multiplied many 

 fold without additional expense. It has undoubtedly been one of 

 the great means of awakening men in the State of Pennsylvania to 

 the production of better crops. Anyone who is awake to the agricul- 

 tural interests in this State will not deny this statement, and, in 

 fact, it could be made much stronger with equal truth. 



4. LECTURES 



The Economic Zoologist has been called upon to deliver lectures 

 in all parts of this State, and has responded to such an extent as 

 his time from other duties would permit. These lectures have been 

 chiefly devoted to the subjects of zoology in some of its broader or 

 narrower fields, and also to orcharding, spraying, crop growing, soil 

 improvement, implements, etc. Naturally the theme that is upper- 

 most in the mind of the public in writing to this office is that of 

 plant protection or pest suppression. We have delivered several 

 illustrated lectures at the various meetings of county horticultural 

 societies, county fairs, and other organizations and clubs, and have 

 felt that some goo(^ m}73t f?A©e from such efforts. 



