306 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



week. Of course, such a scheme is dependent to some 

 extent upon weather, and cannot always be carried out 

 with absolute regularity. A few weeks have been missed 

 now and then when it was practically impossible to work 

 from a small boat in the Bay ; but in all about thirty 

 gatherings are fairly equally spread over the year, and every 

 month is represented. 



Apparatus brought back from a dredging expedition. 



Mr. Chadwick has examined all these gatherings in the 

 fresh condition, and they have then, after preservation, 

 been carefully investigated by Mr. Thompson for Copepoda, 

 while Mr. E. T. Browne, a former worker at Port Erin, 

 has kindly identified the Medusae sent to him. Mr. 

 Chadwick has compiled MS. lists of all the gatherings, 

 and has compared and summarised these with the object 

 of ascertaining how far they bear out, correct, or supple- 

 ment the conclusions we gave in a previous .Report (No. 

 XL, p. 17;. The following summary of the results 



