398 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



The other fish eggs ranged from the end of January 

 to the end of July, with a maximum in March of 32 per 

 haul. 



Some General Kemarks. 



It must be remembered that in the last few reports 

 we have given little more than summaries of the results 

 obtained for each group, and that we have now 

 accumulated a very considerable mass of statistics, 

 including the numerical details of each specie® in each 

 haul throughout the successive years, all of which is 

 awaiting further examination. 



Among rarer, noteworthy forms that have occurred 

 during the year are : — A Siphonophore [Cu^ulita sarsi) 

 in January, and the unusual Copepoda, Metridia lucens, 

 Candacia armata and Corycaeus anglicus, all of which 

 are oceanic forms carried into our area from the 

 Atlantic. Metridia occurs in no less than eight months, 

 but with the exception of 153, on June 20th, it is never 

 abundant. Candacia and Corycaeus occurred rarely. 



Judging from the time of appearance and the 

 maxima of most of the plankton groups, 1912 was an 

 unusually early year. The Diatoms made their appear- 

 ance in quantity earlier, and the maxima of the Dino- 

 flagellates and the Copepods were about a month earlier 

 than in 1911. Although 1911 had an unusually hot and 

 dry summer, it was not until late in April that the 

 temperature of the sea rose above 45° F., while in 1912 

 the sea-temperature was 45° or over from the end of 

 February onwards. 



The weather charts (prepared by Mr. Chadwick from 

 his daily records at the Port Erin Biological Station) 

 which are annexed show the contrast between the two 

 years very clearly. 



