28 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 7 



not file them at all, and one of those who does neglects to make any further use of 

 them. Another files away only the ones he thinks he may need in the future. Fif- 

 teen are agreed that the bulletins cannot be improved or made more readable by a 

 different arrangement of the subject matter, against tlirec who say the contrary and 

 one who questions if such improvement could not be made. Fourteen think they 

 are amply illustrated, against two who want more pictures and one who is still ques- 

 tioning if we can't do better. Fourteen know of no way by which they can be im- 

 proved, while one does, and our previous questioner still answers with an interrogation 

 point. The following comments were noted on the blanks: "Fine"; "^'ery good"; 

 "Make more practical"; "Very good now"; "Very good"; "Pretty good as now 

 exist"; "Think good as stand." 



My second method was to send out 150 copies of the following letter (given in part 

 below), 50 to names taken at random from the roll of the Ohio State Horticultural 

 Society, 50 taken at random from the roll of the Ohio Corn Breeders' Association, 

 and 50 taken at random from the Station mailing list. 



Excerpt from Circular 



"1. Please put a pencil check mark after each of the bulletins in the list hereto 

 appended which you have received during the past six years. 



2. Put a second pencil check mark after those you have read throughout. 



3. Put a third pencil check mark after those that you have partially read by sum- 

 mary or by skimming through to get the main points. 



4. Put a fourth pencil check mark after those numbers you have preserved and 

 still have possession of in your library. 



Spraying apples. 



The more important insects affecting Ohio shade trees. 



The catalpa midge. 



Spring manual of practice in Economic Zoology. 



Raspberry Byturus. 



Spraying machinery. / 



The wheat jointworm. 



Spray calendar. 



Fall manual of practice in Economic Zoology. 



Flour mill fumigation. 



Spraying machinery accessories. 



Some Ohio birds. 



Insect pests of the household. 



Apple spraying in 1908. 



Commercial apple orcharding in Ohio. 



The Chinch Bug. 



Grasshoppers. 



5. Are our bulletins sufficiently illustrated with photographs and drawings? 



6. Please state briefly on the back of this sheet what you think would most help 

 to make our bulletins readable." 



The last 50 names used were doubtless of about the same average quality as those 

 of the 56 men interviewed by the Rm-al Survey, but the first hundred were undoubt- 

 edly of a higher average quality, and represented, to a considerable extent, the leader- 

 ship in Ohio agriculture. At first, I was inclined to .suppose that the 80 persons who 

 did not answer my letter were very likely more careless and indifferent than those who 

 did answer, and that if I had heard from all, a much smaller percentage of readers of 

 our bulletins would have been recorded; and that they were less interested in them in 

 every respect than those who responded. Such a supposition seems hardly warranted 

 after a comparison of the results obtained with those gotten by the Rural Survey, 

 the results,of the two studies approaching each other very closely. Indeed, it appears 

 that I am quite fully warranted in concluding that the 70 persons answering were 

 fairly typical of the 80 who did not respond. 



