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Des Plaines Fish Farm 



867 N. Dearborn Street Chicago, Illinois 



(Hatchery at Des Plaines, 111.) 



Importers and Breeders of Gold and Tropical Fishes. Orders should be placed 

 now for the following fishes to be shipped after May 15th, when weather con- 

 ditions will permit safe transportation: 



Fundulus chrysotus Pf r pair, $2.00 



" " (mottled — very rare) 



Fundulus goodei 



Cyprinodon variegatus 



Oryzias latipes (Medaka) 



Heterandria formosa 



Xiphophorus helleri (young) 



Macropodus viridi-auratus (young) 



Gambusia holbrooki 



Jordanella floridae 



Platyposcilus pulchra per pair, $1.00 to 2.00 



NATURE'S FISHFOOD 



For Goldfish For Tropical Fishes For Native Fish 



A good food is absolutely necessary if one would keep his fishes in good con- 

 dition. Nature's Fish Food is the result of years of study and experiment. If 

 your dealer does not have it we will gladly send you a sample package for 20 

 cents. 



Orders for fishes amounting to less than $5.00 cannot be filled. Shipping 

 cans cost 35 to 50 cents extra. 



4.00 



2.00 



2.00 



.50 



.50 



1.00 



1.00 



.75 



2.00 



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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 of 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 

 given. 



Fresh-Water Biology is a big book of 1111 pages, with 1547 illus- 

 trations. Price, $0.00, plus postage on four pounds. 



AQUATIC LIFE, 542 E. Girard Avenue, Philadelphia, Pa 



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