MAEINE BIOLOGICAL STATION AT PORT ERIN. 25 



large apparatus room over the fish, hatchery, so as to make the 

 front portion, overlooking the bay, available as a research 

 laboratory for bio-chemistry. This new laboratory, simply 

 fitted up with work benches and shelving, sinks, water-taps 

 and gas supply, has been occupied from time to time by 

 Professor Moore, Dr. Prideaux and Messrs. Mottram, Whitley, 

 Edie, Evans and G. A. Herdman in their work on the nutrition 

 of marine invertebrates and on the seasonal changes in the sea- 

 water. The room corresponds practically to the space below 

 the word Hatchery on the right-hand side of the plan shown 

 in fig. 2. 



The usual Easter vacation courses in Marine Biology were 

 carried on during April under the guidance of the teachers in the 

 Zoology and Botany departments of the University of 

 Liverpool. 



Other groups of senior students came from Reading (under 

 Professor Cole's direction), from Manchester, from Birmingham, 

 and we had also a few researchers from Cambridge and else- 

 where — including Dr. Th. Mortensen, from Copenhagen, who 

 came to study our Port Erin Echinoderm larvae, a subject 

 which we hope to illustrate by publishing this winter, as an 

 L.M.B.C. Memoir, the series of drawings which Mr. Chadwick 

 has been accumulating for some years. 



Other special investigations carried on at Port Erin during 

 the year will be referred to in more detail later on in this report. 



The usual collecting expeditions on sea and shore were 

 arranged during the Easter vacation. Figures 3 and 4 show 

 characteristic groups on such occasions — in fig. 3 listening to a 

 discourse at Port St. Mary and in fig. 4 collecting on the sea- 

 shore at Fleshwick bay. 



As on previous occasions, I shall first give the statistics 

 as to the occupation of the " Tables " during the year, then will 

 follow the " Curator's Report," and the reports that have been 

 sent to me by various investigators on the work they have done, 



