Jacob C. Cassel — 
915 Arch Street, Philadelphia, Pa e 2 
Manufacturer of 
AQUARIUMS 
Aquarium Ornaments 
Floral Terra Cotta, Etc. 
Goldfish Fish Globes Fish Food 
and all aquarium requisites. 
Send for Catalog. 
FRESH WATER BIOLOGY 
By HENRY B. WARD and GEORGE C. WHIPPLE 
WITH THE COLLABORATION OF 25 DISTINGUISHED SPECIALISTS 
All interested in aquatic biology will find here answers to their 
queries on methods of study, conditions of existence, types of life, and 
inter-relations of the organisms that inhabit our fresh-water bodies, 
together with data on their life histories, habits and range. 
This work is the first complete and accurate record ne North Amer- 
ican aquatic life, especially the micro-organisms; among both plants 
and animals excluding the vertebrates, higher plants and bacteria, 
every form is described that has been reported from a fresh-water body 
on this continent. 
A comprehensive general discussion of each group precedes the 
description of individual forms, which are arranged under a key to 
permit of rapid and accurate determination of the genera and species. 
Nearly every form is illustrated, and its diagnostic features are pointed 
out. Biological data on its habits, frequence and distribution are also 
eiven. : 
Fresh-Water Biology is a big book of 1111 pages, with 1547 illus- 
trations. Price, $6.00, plus postage on four pounds. 
AQUATIC LIFE, 542 E. Girard Avenue, Philadelphia, 1 Pa. 
i —>006 C= 500g 000 008 ec 
IF YO U : ~ Use Regenia Aquarium Salts if « 
To replace the natural salts in your aquar- 8 
ium as absorbed by the fishes and snails. ~ 
Are Looking for Something Extra es ae apna Hee the eas form 
Fine in Broad-tail Telescopes ders, 25e. For sale at Pet Stock stores. : 
Dow t Forget W. H. HEIMBACH Y - 
: J E Violet-Ray Fish Remedy 
Breeder and Importer of FINE FISH Relieves Constipation, Fungus, Tail Rot, 
Snails Plants Congestion in fancy fishes: also white spots ~ 
on Tropical fishes. Box of Six Powders, 
i 
FISH FOR SALE AT ALL TIMES! | 
413 NortH TENTH STREET 
ALLENTOWN, PA. 
25c. Safe and effective. 
REGENIA CHEMICAL CO. 
Clementon New Jersey {] — 
