CONTENTS. 



• Page. 



Introduction 3 



Studies of tishes 4 



Anatomy of the salmons in relation to fish culture 4 



Atlantic smelts 5 



Determination of species and relationships in the salmon family G 



The whitefishes and their relatives 7 



Biology of the Pacific salmons 8 



Habits of fresh-water tishes 9 



Breeding habits of the paddlefish . V) 



lAfe histories of marine fishes 10 



Sardine of northwest coast 11 



P'ishes in relation to public health 11 



Participation in antimalarial campaign 12 



Fish and mosquito studies at Mound. La 12 



Mosquito control in northern waters 13 



Experimental fish culture 13 



Studies of diseases of fish 14 



Fish disease in St. Lawrence River 15 



Linseed meal a cause of trout disease 16 



Serious disease of buffalofish 16 



Black-siwt disea.se of the bullhead 17 



General study of parasites of fishes 18 



The oyster 19 



Oyster investigations in Long Island Sound 19 



Water pollution as affecting growth and breeding of oysters 20 



Effects of lowered oxygen supply upon oysters . 21 



Oyster investigations in Great South Bay 21 



Oyster investigations in Little Egg Harbor. N. J , 22 



Oysters in Virginia waters endangered by fuel oil 23 



Oyster investigation in the York River _.. 23 



Report on the oyster industry . • 23 



Fresh-water mu.ssels 24 



Experimental work _^ 24 



Protection of mussels ^ 24 



Publication of reports 2~^ 



Oceanographic and lininological studies 25 



Work of the Albatro.ss 25 



Survey in Chesapeake Bay . 26 



Biological and physical studies of inland lakes .' 27 



Miscellaneous studies 27 



Reddening of salt fish 27 



Location of fish from aircraft 28 



Jelly from seaweeds 29 



Utilization of fresh-water turtles ^ 29 



Utilization of frogs 30 



The biological laboratories 30 



