56 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Explanation of the Plates. 

 Plate I. Chart showing the area of the Irish Sea under 

 investigation, and a section across the Irish 

 Sea, through Douglas (this plate is from the 

 report to the British Association at the 

 Nottingham Meeting). 

 Plate II. Sketch of the Biological Station and Aquar- 

 ium at Port Erin. 

 Plate III. Plan and Section of the Aquarium house, 

 as arranged by Mr. Gr. W. Herdman, 

 B.Sc. 

 Plate IV. Diagram of the arrangement of the pipes in 



the Aquarium House. 

 Plate Y. The automatic pump at Port Erin, airanged 

 by G. W. Herdman, B.Sc. 



