GAS DISEASE IN FISHES. 



373 



Table II. — SJioxvlng composition of yas i)i Jesloiis of ihe yai< d'o^eose. 



a Analysis by Dr. M. X. Sullivan. 



6 About. 



Note. — None of the specimens from which gas samples were taken had been dead over thirty 

 hourar and most of them a much shorter time. During this period they were in water at 10.5 ° C. 

 There was no sign of putrefaction. The sample from the eyes of scup was taken immediately after 

 the fish were killed. 



Table III. — Showing nitrogen and oxygen content {in cubic centimeters per liter, reduced 

 to 0°C. and 760 mm., dry) of Woods Hole sea water under various conditions. 



Source. 



Harbor under 

 wharf. 



Hatchery tap. 

 Aquarium tap 



Aquarium tap 

 Aquarium tap 

 Aquarium tap 

 Aquarium tap 

 Aquarium tap 



Aquarium tap 

 Aquarium tap 



Actual con- 

 tent c.c. per 

 liter. 



Nitro- 

 gen. 



Oxy- 

 gen. 



6.0 



Normal con- 

 tent of sea 

 water when 

 saturated 

 with air at 

 the given 

 temperature 

 and prevail- 

 ing pressure, 

 In c.c. per 

 liter. 



Dittmar. 



Nitro- Oxy- 

 gen, gen. 



E.xcess -f- or 



deficit — c.c. 



per liter. 



Nitro- 

 gen. 



4-0.23 



No air entering the suction. 



With much air entering suction. 



Oxy- 

 gen. 



-0.39 

 -0.48 



+1.67 

 +1.85 

 +2.09 

 +1.68 

 +2.03 



With a lesser amount of air entering suction. 



+ 0.69 

 -0.34 



Remarks. 



Harmless to fishes. 



Harmless to fishes. 

 Harmless to fishes. 



Rapidly fatal to 



fishes. 

 Rapidly fatal to 



fishes. 

 Rapidly fatal to 



fishes. 

 Rapidly fatal to 



fishes. 

 Rapidly fatal to 



fishes. 



Less rapidly fatal. 



Transported sample. 

 U. S. Bureau of 

 Chemistry. 



