SCIENCE 



Friday, May 13, 1921 



CONTENTS 



The Biological Station at Faiirport, Iowa, as 

 an Agency for Public Service: Dr. E. E. 

 COKEB 447 



Bryozoa as Food for Other Animals: Dk. 

 Raymond C. Osbukn. 451 



Copper in Animals and Plants: Dr. Richard 

 A. MUTTKOWSKI 453 



Scientific Events: — 



Directors of Besearch and Scientific Quali- 

 fications; Elections iy the National Acad- 

 emy of Sciences; The Printers' StriTce and 

 the Publication of Science 454 



Soientifio Notes and News 455 



University and Educational News 456 



Discussion and Correspondence : — 



English Pronunciation for the Metric Sys- 

 tem: Howard B. Pbost. Extramundane 

 Life: Dr. Hubert Lyman Clark, Db. W. 

 W. Campbell 457 



Scientific Boolcs: — 



The Sumario Compendioso of Brother Juan 

 Dies: Professor G. A. Miller. Cayeux's 

 Introduction to the Study of the Petrog- 

 raphy of the Sedimentary Socles: Marcus 

 I. Goldman 458 



Special Articles: — 



The Occurrence of Gammerus Limnaeus 

 Smith in a Saline Habitat : Dr. Ross Aiken 



GORTNER AND J. ARTHUR HARRIS. An Eye- 



less Daphnid : Dr. Arthur M. Banta .... 460 



The Easter Meeting of the American Mathe- 

 matical Society at Chicago: Professor Ar- 

 nold Dresden 463 



The American Association for the Advance- 

 ment of Science: 

 Pacific Divmon: Dr. W. W. Sargeant. . . . 464 



MSS. intended for publication and books, etc., intended for 

 review should be sent to The Editor of Science, Garrison-on- 

 Hudaon, N. Y. 



THE BIOLOGICAL STATION AT FAIR- 

 PORT, IOWA, AS AN AGENCY 

 FOR PUBLIC SERVICE i 



The U. S. Fisheries Biological Station at 

 Fairport, Iowa, combines in a somewhat 

 unique way the functions of a fisheries bio- 

 logical station and a fish-cultural experiment 

 station. Its functions include the propaga- 

 tion and investigation of fresh-water mussels, 

 the conduct of fish-cultural experiment work, 

 investigation of various fresh-water fishery 

 problems, and the promotion both of a fuller 

 utilization of aquatic products and of a broader 

 and more efiicient interest in the protection of 

 aquatic resources. With its admirable build- 

 ing, its extensive equipment of ponds and its 

 general environment, it offers unusually favor- 

 able conditions for all manner of biological 

 investigations, and the Bureau of Fisheries 

 invites university biologists to avail them- 

 selves of the opportunities there afforded for 

 independent research work. 



The primary functions of the station are 

 characteristically ecological. In mussel prop- 

 agation it deals directly with that striking 

 symbiotic relation existing between fish and 

 mussels, the fish being essential to the develop- 

 ment of mussels and the mussels promoting, 

 in part directly, and perhajts in greater part 

 indirectly, the food supply of fishes. As a 

 fish-cultural exi)eriment station, it is con- 

 cerned not so much with fish as with that 

 complex association of fish, insects, molluscs, 

 Crustacea, algse, and other animals and plants, 

 all of which are intimately interrelated and in 

 turn dependent upon physical and chemical 

 conditions of water, bottom soil and land en- 

 vironment — an association which we call in 



' The functions and opportunities of the Station 

 as expressed by leaders in the dedicatory exercises 

 and conference held at Fairport, Iowa, in October, 

 1920, are given in this paper, in connection with 

 an account of the exercises and the conference. 



