MARINE BIOLOGICAL STATION AT PORT ERIN 



73 



Against the cliff, at the rear of the hatchery, two 

 large storage tanks, built of masonry and concrete are 

 capable of holding a large supply of sea-water for the 

 Hatchery and Aquarium. Water is pumped from the sea 

 to these tanks through a 4-inch iron suction pipe, laid 

 in a trench excavated to 10 feet below the level of the 

 road. The perforated box through which the sea-water 

 enters the pipe is laid on the beach below half-tide mark 

 on hard, clean rock, at a place where the water is pure. 



Fig. C. — Western end of Biological Station and large Spawning Pond. 



Marine Biology is the branch of science which deals 

 with the development, life-history, structure, actions and 

 relationships of the animals and plants which live in the 

 sea, and also with any general theoretical questions upon 

 which these animals and plants throw any light. Life is 

 almost universally distributed on sea and shore. Some 

 localities are, of course, more abundantly supplied than 

 others, and Port Erin is one of the most highly-favoured 



