Journal of Entomology and Zoology — Advertising Section 
Do You Need? 
Ciass-Room Material large, typical and handsome specimens to illustrate your 
lectures, specially mounted for the purpose; or accurate models. 
Museum Material the best the world can supply, in single lots or in carefully 
prepared synoptic collections. 
Laboratory Material in quantity for class use, of guaranteed quality. 
Study Material for your private collection and your research, selected by our 
experts to show just the detail you desire, sent subject to your approval. 
Your Trophies of the last hunt mounted by our skilled taxidermists, or entomolog- 
ical corps. 
Microscope Slides of any or all kinds, and highest grade. 
Your desiderata kept before our eyes and secured for you through our world- 
wide dragnet of correspondents and collectors. 
Did You Kuow? 
That the following other institutions are now incorporated into ours: 
American Entomological Company 
Microscope Slide Department of Bausch & Lomb 
George L. English Mineralogical Company 
Frazar Mineral Company 
— That we are continually adding to our wealth of material and our half-century 
of experience. Is your name on our mailing list for announcements of these, 
as issued? 
— That we cover all departments of natural history (except plants), including: 
Entomology, Zoology, Biology, Histology, Embryology, Microscopy, Physiology, 
Human and Animal Anatomy, and Osteology, Taxidermy, Invertebratology (Shells, 
Corals, Sponges, Echinoderms, Crustaceans, etc.). Palaeontology, Phenomena! 
Geology, Relief Maps, Mineralogy, Petrology, Archaeology, etc. Send for our 
lists of catalogues and circulars. 
— That we have the largest and most complete stock of any dealer in the world, 
and the best scientific staff. 
Note especially our Life Histories and Economic 
Collections of Insects. (Circulars Issued.) 
Fifty Years of Service, 
Ward's Natural Science 
Establishment 
Founded 1802 Incorporated IS'JO 
84-102 College Ave., Rochester, N. Y. 
Look for our special entomological offerings in the next issue. 
