34 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Particles of carmine which were added to the water and were 

 drawn in by the animal enabled this band to be seen very 

 clearly extending from the oesophageal opening up to the middle 

 of the branchial sac. Naturally this interesting observation 

 ought to be repeated, both on the same and other species, 

 and Miss Duvall hopes to return to the investigation at the 

 earliest opportunity. 



Dr. Debaisieux, of Louvain, devoted his attention chiefly 

 to a re- examination oiMerocystis kathae, the Protozoan parasite 

 found by Dr. Dakin in the renal organ of the whelk some years 

 ago ; and he made a large collection of original drawings of the 

 various stages of its life-history. He also examined various 

 other molluscs and some fishes for Protozoan parasites. 



Mr. S. T. Burfield, B.A., has continued his work on the 

 remarkable pelagic Arrow-worm, Sagitta bipunctata, which 

 he is investigating from every point of view with the object 

 of producing an L.M.B.C. Memoir on the subject. He was 

 mainly occupied at Port Erin in collecting material from the 

 plankton samples and in fixing the best specimens for sectioning 

 with a view to histological work. Attempts were also made 

 to keep the adult animals alive in the laboratory with a view 

 to obtaining eggs and early stages, but without much success 

 so far. The work will be continued in all probability during 

 next Easter vacation. 



Miss K. C. B amber, M.Sc., and Mr. Burfield have started 

 a series of observations on living Echinoderms with the view of 

 ascertaining more precisely the direction of the water current 

 through the madreporite. It is intended to repeat and extend 

 these experiments in order to ascertain whether there are 

 indications of an excretory function in the water-vascular 

 system. 



Mr. H. G. Jackson, M.Sc, acted as my Assistant in the 

 plankton investigation from the yacht during the Easter 

 vacation. The results obtained will be given in full in the next 



