Bausch & Lomb Optical Co.
Carl Zeiss Optical Works, Jena George N. Saegmuller
^^ I Washington
New York \
/ San Francisco
and Executive Office
n, N. Y.
A booklet entitled "A Triple Alliance in Optics" is now in press. It gives a detailed account of the association of interests of the three above mentioned firms and is designed for general distribution. If you do not receive a copy we shall be pleased to mail one on request.
Can be imported free of duty at a saving of from 35 to 40% from the American prices. We import microscopes for the largest institutions in the country.
The New Reflecting Lantern
for showing on the screen opaque objects, book illustrations, engravings and lantern slides, is the most perfect instrument of its kind. It is in use at Harvard, Cornell, U. of P., Leland Stanford, Girard College and 500 other institutions.
Lantern Slides and Microscopic Slides
illustrating Botany, Geology and other sciences.
Lists on application.
WILLIAMS. BROWN & EARLE. Dept. N , 918 Chestnut St., Philadelphia, Pa.
WATSON & SONS'
Every Microscopist, no matter in what depart-, ment he may be interested, will find specimens of interest and rarity listed in Watson's Cata- logue of Microscopic Objects. It is a classified list representing a stock of more than
40,000 CHOICE SPECIMENS
Each guaranteed typical of the structure it represents. These slides are used for teaching and examination purposes throughout the world, The series comprise illustrations in Histology, Pathology, Zoology, Bacteriology, Hematology (including Malaria), Botany, Entomology, Geol- ogy, Diatomacese, etc. , etc. Amateurs will find in this list many desirable additions for their cabinets, from Is. up.
The above list will be mailed free on request.
WATSON & SONS Microscope Manufacturers,
WHOLESALE AND RETAIL
313 HIGH HOLBORN, LONDON, ENGLAND
Established 1837. Awarded 42 Gold and other Medals
Microscopic Objects may be conveniently Sent
to the U. S. A. by parcel post.
American Agents: The Scientific Shop (A. B. Pobtbh) Rooms 1230 1245 Monon Building, 321 Dearborn Street, Chicago, through whom orders should be sen
QUALITY ~^"> HIGHER THAN PRICE, \
PRICE WITHIN THE REACH
OF ALL- I
for PURITY AND