Journal op Entomology and Zoology — Advertising Section 
The New Home Balopticon 
KiiiiippeLl with a nitrogen-filled Mazdii lamp which gives a 
brilliant illumination and a clear definition. Is superior to 
anvthiug vet offered in this type of apparatus. Write for 
booklets. $35.00 for Opaque Projection only: $45.00 with 
Lantern Slide Attachment. 
Bausch & Lomb Optical Co. 
Factory. Rochesiei. N. Y. I 54 Sutter Street, San Francisco 
copes. Laboratory App.'iratus, 
CLASS WORK MATERIAL 
CAN BE PROCURED AT ANY TIME OF 
THE YEAR FROM 
C. S. BRIMLEY, Zoologist 
I 135 Newberne Avenue 
RALEIGH, N. C, U. S. A. 
Twenty-one years' experience 
Price List on Application 
GRIFFITH 
Incubators 
A simple, well constructed bacteriolog- 
ical incubator 
The Journal of 
Parasitology 
A Quarterly devoted to Medical 
Zoology 
This journal will be a medium for 
the prompt publication of briefer 
papers and research notes on animal 
parasites. Emphasis laid on the mor- 
phology, life history and biology of 
zooparasites and the relations of ani- 
mals to disease. 
Subscription, $2.00 a volume 
Managing Editor, 
HENRY B. WARD, 
Univ. Illinois, Urbana, 111. 
