Vol. XXIV] ENTOMOLOGICAL NEWS 465 



Coming to bilateral symmetry, the aesthetic value of this de- 

 pends upon the method of orientation and exploitation. With 

 the Lepidoptera the eyes usually select a middle part and then 

 make equal movements to the right and left. This is the nat- 

 ural method and in conformity with the relations of the eyes 

 with their muscles. 



Practically all collectors of insects start with the Lepidoptera 

 for the simple reason that this order appeals to their aesthetic 

 taste. This taste of course can be trained and the mental qual- 

 ities along entomological lines so developed that the level of 

 aesthetic appreciation is raised and as a result the perceptions 

 of members of other orders of insects give rise to pleasurable 

 feelings and enjoyment. Interest and ownership of course do 

 not enter into aesthetic appreciation. If you enjoy your col- 

 lection of Coleoptera or Lepidoptera because it is yours, you 

 are not having an aesthetic experience. Aesthetic pleasure is 

 an entirely disinterested operation. 



The Lepidoptera on account of their form will always stand 

 first in the order of aesthetic value and the arrangement of the 

 other orders will vary of course with different individuals. 



A Course in Applied Entomology. 



The Ohio State University has established a course in Applied 

 Entomology' and announces a course of study, leading to a Bachelor 

 of Science degree, to cover four years of under-graduate work, in- 

 cluding such subjects as Modern Languages, Chemistry, Botany, 

 Zoology, Geology, Horticulture and Agronomy besides a number of 

 strictly technical Entomological courses. It is intended to fit students 

 for technical work in the Bureau of Entomology, Experiment Sta- 

 tions, State and Federal Quarantine Service or as Investigators in 

 Boards of Health or other professional positions. 



Plates of Diptera and Hymenoptera. 



There are at the disposal of the Bureau of Entomology, Washing- 

 ton, D. C., a considerable number of sets of extra plates struck from 

 the original engravings made for the Loew-Osten Sacken Dolicho- 

 podidae. Vol. II and Ortalidae and Trypetidae, Vol. Ill; also plates of 

 Saussure's American Vespidae, originally printed in the Smithsonian 

 Miscellaneous Collections, No. 254. The latter are uncolored. To 

 persons interested in the two orders these plates will be distributed 

 free of charge, upon application to the Bureau of Entomology. 



