296 



L. H. HYMAN. 



TABLE I. 



EFFECT OF THE ACIDIFICATION OF THE SEA-WATER WITH HYDROCHLORIC ACID 

 ON THE RATE OF OXYGEN CONSUMPTION OF THE STARFISH Patiria 



miniata, AND THE NUDIBRANCH Anisodoris nobilis. 



Oxygen consumed given in cubic centimeters, per ninety minutes for the starfish, 

 per hour for the nudibranch. Each vertical column constitutes one experiment, 

 showing successive tests of the oxygen consumption of the same animals or animal. 

 The concentration of the acid is given in molecular strengths. 



TABLE II. 



AVERAGE INITIAL PER CENT. DEPRESSION OF ALL EXPERIMENTS ON 



MARINE ANIMALS. 



tration were made but only one of these is given in the table, 

 and may be taken as typical of the three. The results on the 

 other species of starfish (Leptasterias eqiialis) being in no wise 

 different from those on Patiria are omitted for the sake of 

 economy of space. In Table II. is given a summary of all of 

 the experiments, the three trials with each concentration being 



