92 



American Fisheries Society. 



sion's staff; Mr. Herbert Ant, chemist; Mr, Summer Cowden, field 

 superintendent; Mr. Henry Davidson, hatchery superintendent, and 

 Mr. Russell Suter, senior assistant engineer. 



Attention is called to the very low oxygen content at the Bath 

 Hatchery ; to sample 18 indicating that the critical point was ap- 

 proached when the oxygen supply was about one part per million 

 (10 per cent saturation) at 9" C. ; and to sample 19 showing the cor- 

 relation between low oxygen and high CO^ when death occurs. 

 These samples were taken primarily to determine the minimum 

 oxygen requirements of fish. 



