April, '11] gossard: reaching the public 255 



were all used during the season by the Department of Entomology 

 for spraying experiments in which the effects of the different combi- 

 nations of sprays such as lime-sulfur and arsenate of lead, and bor- 

 deaux mixture and arsenate of lead in different proportions were 

 shown on foliage and fruit. At an earlier date, about midsummer, 

 all the farmers' institute speakers employed by the state assembled 

 in a convention were conducted through the same orchards and ex- 

 planations were given of the work being done and the treatment that 

 had been given to the different plots. The reports of these autumn 

 field meetings of the Ohio Horticultural Society have been printed and 

 distributed as circulars of the Ohio Station. A good idea of what is 

 done at these field meetings and the nature of the papers or off-hand 

 talks presented, can be obtained by consulting Circulars 87 and 103 

 which contain quite full details. 



The farmers' institute also furnishes a method for reaching a good 

 many people. It often happens that a man will read with interest 

 a bulletin, the author of which is personally known to him, when it 

 would hardly be Noticed if the writer were a stranger. There is a limit, 

 however, to the amount of institute work that can be done by the 

 research student, and it is generally necessary to discourage calls of this 

 kind rather than try to multiply them. At the Ohio Station we print 

 a folder each fall which contains the following introductory paragraph: 



The members of the Station Staff tiamed below are prepared to assist at a limited 

 number of independent farmers' institutes, and similar meetings. No per diem is 

 charged for this service, but it is expected that the speakers will be reimbursed for 

 their necessary traveling and hotel expenses. 



Where two or more names are given at the head of a list of topics requests may 

 be made for discussion of any of the topics on the list by any member of the depart- 

 ment. The lecturer requested will be sent if possible, but if conflicting engagements 

 make this impossible, some other person qualified to discuss the subject will be sent. 



At the head of the list of entomological topics we print the names 

 of the entire entomological staff as far as they are available for such 

 work, thus: 



DEPARTMENT OF ENTOMOLOGY 

 H. A. Gossard. 

 W. H. Goodwin. 

 R. D. Whitmarsh. 



1. How to spray the apple orchard. (In some of our experiments the net re- 

 turns have averaged $400 and $500 per acre for a single crop. ) 



2. How to spray peach, pear and plum orchards. 



3. How to treat the vineyard to prevent Grapeberry worm and other insect 

 enemies of the grape. 



4. Home-made sprays, commercial insecticides and spraying machinery. 



5. Our allies in the war against insects; birds, insectivorous animals, parasites, 

 fungous and bacterial diseases. 



