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 may be 
inferred from the fact that thirty years ago the official 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 for 
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 involve 
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 broader their 
preparatory work in these lines the better equipped they will be 
to recognize effective methods of application for insect control. 
PUBLICATIONS. 
Among the various Ohio publications which have served for the 
distribution of entomological matter are the Quarterly Journal 
and Review, Cincinnati, 1846; 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 Columbus Horticultural .Society; 
The Ohio Farmer; Journal of Cincinnati Society of Natural 
History; Field Notes (1861); Ohio Naturalist, 1902 to present 
date; Ohio Geological Survey, 1838 and 1874; Ohio Academy of 
Science Proceedings, 1891 to date; Experiment Station Reports 
and Bulletins; Ohio Biological Survey and State Board of Health 
Reports. 
Articles have also appeared in periodicals 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. 
