140 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



also be useful during the remainder of the year for many 

 other purposes.* 



In the special parts of this Iieport which follow will be 

 found : — Mr. Scott's account of the hatching operations 

 at Piel, with a description of the new apparatus he has 

 devised for keeping the water in motion ; Mr. Johnstone's 

 statistics of the Mersey Shrimping Grounds ; a report 

 upon the deposits on these grounds in relation to shrimps 

 and young fish ; a note on a new parasite in the plaice ; 

 Mr. Scott's memoir on the two Copepod Fish-Parasites ; 

 and an article I have thought it well to write on the 

 necessity for a more detailed examination of our fishing 

 grounds, with an outline of a scheme of observational 

 work for use on board the steamer, to which I desire to 

 call the special attention of the Committee. 



"W. A. Herdman. 



University College, Liverpool, 

 Jan liar//, 1901. 



Thci&e were referred to in detail in lust year's report, at p. 10. 



