30 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



At a distance of 20 feet from the west end of the build- 

 ing is a large pond, excavated from the rock, 90 feet long 

 by 50 feet wide, and Laving a maximum depth along the 

 north side of about 10 feet. This is divided by a partition 

 wall and sluice, and will be stocked with spawning fish, 

 and used also for other purposes. A wall 7 feet high, 

 with rough top, screens the pond from public view on the 

 north and west sides. Against the cliff at the rear of the 

 Hatchery is a tank, built of masonry and concrete, and 

 capable of holding 15,000 gallons of sea-water, for the 

 supply of the Hatchery and Aquarium. Water is pumped 

 from the sea into this tank through a four-inch iron 

 suction pipe, laid in a trench excavated to a depth of about 

 10 feet below the surf are of the ground. The perforated 

 box through which the water enters the pipe is laid on the 

 beach at a point a little below half tide mark, on hard, 

 (Iran rock, at a place where the water is pure. A low 

 stone wall, surmounted by an iron railing, with a gate 

 opposite the front entrance, encloses an area about 15 feet 

 wide in front of the building. At the west end it joins the 

 wali surrounding the pond, while at the east end it is 

 carried round to the rear of the building, and encloses an 

 area about 5 feet wide. At the same end a substantial 

 stone wall 9 feet high, and having a sliding gateway of 

 the same width, encloses a large and useful yard between 

 the buildings and the high cliff at the back, aifording 

 ample room for additional tanks and for ike storage of 

 boats, trawls and other gear and apparatus. A glance at 

 figures 8 and 9 will show the front elevation and the 

 arrangement of the accommodation on the ground floor; 

 while figures 5, 6 and 7 show the building and its 

 surroundings from various points of view. 



