462 The Ohio Naturalist. [Vol. XV, No. 5, 



tion, since our modern means of rapid transportation offer 

 abundant opportunities for introduction of injurious species thru 

 commerce. 



Some idea of the growth of Entomological Science ma}' be 

 inferred from the fact that thirty years ago the ofificial workers in 

 Entomology numbered not more than a dozen while today the 

 number runs up into the hundreds. Something over five 

 hundred are represented in Entomological Societies of this countrv. 



Among the problems which are attracting Entomologists 

 or Biologists there are numerous questions which depend ^^or 

 their solution upon the application of related Sciences. The devel- 

 opment of special machinery involves the mechanician or mechani- 

 cal engineer, the preparation of insecticides is largely chemical, 

 preparation and formation of emulsions is a physical question, while 

 any of the direct problems confronting the Entomologist in^^olve 

 plant or animal physiology in such manner that acquaintance with 

 these branches of Science is almost essential. Furthermore ac- 

 quaintance with principles of Agriculture and Horticulture lie at 

 the foundation of so many of the methods of control that no 

 Entomologist can feel himself qualified for economic work without 

 some knowledge of these subjects. 



It will be noted from this that while Entomologists must be 

 specialists in the study of insects, they cannot by any means ignore 

 general training in Science and Agriculture. The Ijroader their 

 preparatory work in these lines the better equipped they will be 

 to recognize effective methods of api^lication for insect control. 



PUBLICATIONS. 



Among the various Ohio publications which ha\'c scr\^ed for the 

 distribution of entomological matter arc the Quarterly Journal 

 and Review, Cincinnati, 1X4(5; Annals of Science, Cleveland, Ohio, 

 1854; Family Visitor, published at Cleveland during the years 

 1850-52; Cincinnati Quarterly Journal of Science, 1874; The Ohio 

 State Agricultural Reports; The Ohio Horticultural Society 

 Reports; Proceedings of the Columl)us Horticultural Societ}^; 

 The Ohio Farmer; Journal of Cincinnati Society of Natural 

 History; Field Notes (18()1); Ohio NaturaHst, H)()2 to present 

 date; Ohio Geological Survey, 1S38 and- 1874; Ohio Academy of 

 Science Proceedings, I8i)l to date; Exi)erimcnt Station Re])orts 

 and Bulletins; Ohio Biological Survey and vState Board of Health 

 Rei^orts. 



Articles have also appeared in ]jeriodicals outside of the state 

 such as Silliman's Journal of Science, The Canadian Entomologist, 

 American Naturalist, American Entomologist, Journal of Economic 

 Entomology, Annals of the Entomological Society of America, 

 Entomological News, Psyche, etc. 



