370 



TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



and the detailed lists of identifications and numbers are 

 filed for future reference, and we hope, when the series of 

 observations is completed, to undertake the revision and 

 re-consideration of the whole. 



In the meantime we think it useful to issue this 

 report on the more noteworthy features of the year's 

 plankton, and on any new points that we consider require 

 mention or discussion. 



For fuller information in regard to our methods, 

 and for the results so far obtained, we must refer readers 

 to the preceding six parts of this report (for 1907-1912). 



Material Available. 



The collections during 1913 have amounted to 405 — 

 all taken within the same limited sea-area off the Isle of 

 Man as in former years. Our table for the whole series 

 of samples from the beginning of the investigation is now 

 as follows : — 





At Sea, from Yacht. 



In Bay 





Year. 







throughout 



Totals. 









Spring. 



Autumn. 



Year. 





1907 



218 



279 



138 



635 



1908 



156 



242 



157 



555 



1909 



329 



147 



231+49 



756 



1910 



107 



249 



296 



652 



1911 



120 



84 



314 



518 



1912 



87 







299 



386 



1913 



82 



41 



282 



405 



Totals ... 



1,099 



1,042 



1,766 



3,907 



As further material available for comparison, it may 

 be noted that the fishery steamer " James Fletcher " has 

 taken a large number of plankton hauls in other parts of 

 the district during the past year, and these have been 

 worked up by Mr. Biddell ; while other samples were taken 



