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FRESH WATER BIOLOGY 



By HENRY B. WARD AND GEORGE C. WHIPPLE 



WITH TH E 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, $6.00, plus postage on four pounds. 



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



3 J 



aquatic Hiff, 1920 



January, 1920. Betta rubra (Heede) ; Ob- 

 servations on the Chelonians of North Amer- 

 ica, Part VI (Shufeldt) ; Beef Heart and 

 Beef Liver for Young Fishes ; Notes on Mos- 

 quito Larvae (Hale) ; Lucania ommata (ex- 

 tension of range) ; Habits of Fundulus nottii 

 and Heterandria f ormosa ; Linseed meal cause 

 of disease among trout; South Australian 

 Aquarium Society, Passaic Aquarium Society, 

 the Redfield Theory, etc. 



February. Goldfish Foods and Feeding as 

 Practiced in Japan (Nakashima) ; Observations 

 on the Chelonians of North America, Part VII 

 (Shufeldt) ; The Mosquito (Hale) ; Lucio- 

 cephalus pulcher (Heede) ; Maintaining an 

 Aquarium ( Trell) ; An Easily Constructed 

 Heated Aquarium (Finckh) ; Roosevelt Wild 

 Life Forest Experiment Station, February 

 Pointers, etc. 



March. The Australian Congolly (Hale) ; 

 Observations on the Chelonians of North 

 America, Part VIII (Shufeldt) ; Ichthyopthir- 

 ius multifilius (Webber) ; Rivulus strigatus 

 (Brind); An Odd Trunkfish (Hubbs) ; North 

 Carolina Notes (Carlton) ; Society news. 



April. Mastacembelus pan'-alus (MacMor- 

 ris) ; A New Treatment to Eliminate Ichthy- 

 ophthirius (Hauthaway) ; Observations on the 

 Chelonians of North America, Part IX (Shu- 

 feldt) ; Notes on Haplochilus lineatus (Saw- 

 yer) ; The Artificial Production of Albinism 

 (Waite); A Metal Net for Larval Fishes 

 (Balleisen) ; The "Balanced" Aquarium — A 

 Question and an Experiment (Powers) ; 

 Venus's Fly Trap, Notes and News. 



Choice Tropical Fishes 



BREEDERS AND YOUNG REASONABLE 



H. E. GREEN, 5022 Chestnut Street 



Philadelphia 



FOR SALE 



Ten tanks, exotic fish, plants, red snails 

 and sundries. C. L. Hagen, 209 West 

 42d Street, New York 



AQUATIC MICROSCOPY H 



BY DR. ALFRED C. STOKES [ 



0" SPLENDID, not too technical hand [] 



book of the lower organisms for the f; 



inquiring aquarist who dislikes to be 

 nonplused by scientific verbiage. 324 

 pages, with 198 illustrations. 



$2.50 Plus Postage on 2 Pounds 



Address Aquatic Life 



