ON TUE CANADIAN BIOLOGICAL STATION. 58S 



for one year. It is the present intention to have all preparations com- 

 pleted in time to commence active work early in the summer of 1899. 



The Board of Management as now constituted consists of the foUowins 

 members : — 



Professor E. E. Prince, Director, Department of Marine and Fisheries. 



Professor D. P. Pbnhallow, ] -.^ o.,, ^t • -i 



,5 c -.-, ,„ Tir.^D^, V McGill University. 



Professor h. W. MacBeide, J ■' 



Professor Ramsay Weight, Toronto University. 



Professor L. W. Bailey, University of New Brunswick. 



Professor A. P. Knic4HT, Queen's Universit}'. 



Eev. V. A. Huart, Laval University. 



, Dalhousie University. 



Iiwestigations made at the Marine Biolociical Laboratory, Pli/moutli. — 

 Beport of the Committee, consisting 0/' Mr. Gr. C. Bourne (Chair- 

 man), Professor E. Ray Lankester (Secretari/), Professor Sydney 

 H. Vines, Mr. A. Sedgwick, and Professor W. F. R. Weldon. 



r\r,F. 



liejwrt of Alfiological Worl!. By G. Beebner 583 



Report OA Nerves of Aremcola, Nereis, S\'c. By F. W. Gamble, jy.&. . . 584 

 Report on Mr. J. H. Wadsworth's eolleet'wn of material for the Study of the 



Enibryoloyii of Alcyonitiin. i?y Professor S. J. Hi CKSON, F.R.S. . . . 585 



Report of Algological Work. By G. Brebner. 



Having had the honour to be appointed to the British Association Table 

 for a month during the current year, I was glad to avail myselt of the 

 opportunity to carry on my investigations into the life-history of the 

 Tilopteridacese during my Easter holidays. 



Although my results were negative, I gained a certain amount of 

 knowledge and experience, which I hope will enable me to prosecute the 

 investigation with more success another year. 



The vexed question of fertilisation in certain of the brown sea-weeds 

 is at present attracting a good deal of attention among others in the 

 Tilopteridaceoe, a group in which I am specially interested. In the two 

 best defined genera of that family there seem to be well-differentiated 

 antheridia (male organs) and oogonia (female organs). At the s&ww time 

 the plants bear what are generally considered to be non-sexual organs, or 

 sjiorangia. 



In a paper recently published (see Bristol Naturalists' Society's 

 'Proceedings,' voL viii. Pt. II. 1896-97) I suggest that the family 

 should be limited to the two monotypic genera llaplospora and 2'ilo])ferif<. 

 In one of these, Haplospora glohosa, the three kinds of reproductive organs 

 are much more clearly differentiated than in the other, Tilopteris Jlcr- 

 tensii, in which, owing to their similar position in the frond, it is almost 

 impossible to distinguish the oogonia from the sporangia unless we may 

 assume that those specimens which bear antheridia likewise bear oogonia 

 only. We unfortunately cannot with safety assume this, as I have 

 shown that Haplospora globosa may be ' sporo-hermaphrodite.' 



Haplospora globosa would be the best species on which to study this 

 <Iuestion of fertilisation, but the antheridic specimens are so rare in this 

 alga that I had to fall back upon the much less suitable Tilopteris Mer- 

 iensii, which is much more abundant and widely distributed in this 

 country, arid also much more frequently antheridic. T. Mertensii occurs 



