24 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



submitted, the brown gelatinous matter is a Diatom allied 

 to Rhizosolenia, but in a peculiar condition being without 

 its siliceous covering. Mr. Thompson noticed the abundance 

 of small drum-shaped greenish-brown Algae in the tow-net- 

 tings which he examined from June 7th onwards. Cteno- 

 phora have been present in profusion on the surface 

 throughout the summer. Mr. T. Comber, F.L.S., has 

 examined some of this year's surface gatherings for Diatoms, 

 and finds by far the most prevalent form in the samples he 

 received is Biddidphla baylii (96 per cent, in gatherings 

 taken in May). However, his further observations are 

 reserved until more material has passed through his hands. 

 The surface Dinoflagellata (Ceratium tripos and allied forms) 

 which are sometimes present in great abundance are now 

 being investigated by Mr. I. C. Thompson. 



The Puffins (Fratercula arctica) are still abundant. They 

 came to the island this year in the last week of April, and 

 left about the middle of August. 



The Sea-weeds of the District. 

 Investigations on the Algse of Puffin Island and the 

 neighbourhood are now being carried on very actively by 

 Mr. Harvey Gibson, who tells me that he has on 

 record 275 species in all, of which 70 are additional to his 

 former report. Early in April Mr. Thompson, Mr. 

 Gibson and the Botanical Laboratory Assistant, Geo. 

 Burrow, went to the Island for the Easter holidays. Mr. 

 Thompson worked the surface successfully, taking 

 gatherings by moonlight round the Island (when Zaus 

 spinatus and other forms were taken), and also leaving a 

 tow-net out all night attached by a rope 20 feet long to 

 the " D. B." or Dinmor buoy, about one mile out to sea 

 from Dinmor Point, Anglesey. This net was found when 

 examined 24 hours after to have caught an enormous 



