AND PERSONALITY 



In the gill-breathing fish the ceiling is just the opposite. 

 The size of the brain, the heart, the thyroid gland of the fish 

 are dependent on the concentration of oxygen in the water. 

 There is no problem with fish as to heatstroke, because 

 water abstracts heat twenty-seven times faster than air of 

 the same temperature. 



There is a greater concentration of oxygen in cold water 

 than in warm water; therefore, the energy-controlling 

 organs of the fish and the power and personality of the fish 

 are greater in the cold water of the arctic than in the warm 

 water of the Gulf Stream; on the shallow beaches where the 

 bubbling water holds more oxygen than in the still waters 

 of the marsh; in the rapid mountain stream than in the 

 quiet river; and in water over which the constant trade 

 winds blow than in water outside the influence of these 

 beneficent winds. 



In such fish as the sting ray, with its batlike wings, whose 

 habitat is the shallow, foaming water of the beaches, in the 

 trout that is found in the tumbling mountain stream, and 

 in the tarpon that swims near the surface of water fanned 

 by the trade winds, one would expect to find a larger brain, 

 a larger heart, a larger thyroid gland, and one may suppose 

 more chromaffin tissue, the forerunner of the adrenal glands. 



Increased concentration and constancy of oxygen in the 

 water give increased oxidation. Increased oxidation confers 

 increased electric potential. Increased electric potential 

 executes increased nervous and muscular power, hence a 



