via 



ARTICLE VIII. THE REACTIONS AND RESISTANCE OF FISHES 



TO CARBON DIOXIDE AND CARBON MONOXIDE. BY MORRIS p.vgi: 



M. WELLS. Ph.D. (1 Figure. 1 Chakt) May, 1918 . .557-571 



Introduction 557 



Properties of the gases 559 



Methods and materials 559 



General resistance of fishes 565 



Summary 568 



Bibliography 569 



ARTICLE IX. EQUIPMENT FOR MAINTAINING A FLOW OF 

 OXYGEN-FREE WATER, AND FOR CONTROLLING GAS CON- 

 TENT. BY VICTOR E. SHELFORD, Ph.D. (1 Figure) May, 1918.573-575 



ARTICLE X. A COLLECTING BOTTLE ESPECIALLY ADAPTED 

 FOR THE QUANTITATIVE AND QUALITATIVE DETERMINA- 

 TION OP DISSOLVED GASES, PARTICULARLY VERY SMALL 

 QUANTITIES OF OXYGEN. BY EDWIN B. POWERS, M. A. 

 (1 Figure) May, 1918 577-578 



