OF THE HALOLIMNIC FAUNA OF LAKE TANGANYIKA. 349 



the part of the Council and oiu'selves, to the author of this paper. 

 It is most incumbent on me to do so, for I think I am in some way 

 responsible for it. 



When Mr. Moore's admirable work appeared, and long before^ 

 indeed, this subject of the possible origin of marine forms in one of 

 our great African Lakes, in the very heart of that great continent^ 

 struck me as one of the most interesting physical problems that 

 had been put before us in the present generation ; and when Mr. 

 Moore's work came out we took an early opportimity of becoming 

 possessed of it ; and I considered with myself, who can we get 

 amongst the members of the Institute ha\'ing the knowledge and 

 ability to deal with a problem of such vast breadth and intricacy 1 

 Xaturally Mr. Hudleston, who is a Vice-President of the Institute, 

 came before my mind as being capable in the above sense, and I 

 wrote to him on the subject. I felt that I was putting an almost 

 herculean task upon him, luit I felt sure if his strength and time 

 permitted he would not refuse ; and he has not, happily for us. He 

 has given us a paper of immense interest and one that will take a 

 marked position in the Tran sad ions of this Institute. 



It is very gratifpng that Mr. Moore, the author of this work, has- 

 been able to be present and to take part in the discussion. 



I had some observations to make, but I will not do so at this 

 late hour, and will simply move a hearty vote of thanks to Mr, 

 Hudleston for giving us his paper this evening. [Applause.] 



The Chairman. — I should like to second that. I came here only 

 to learn, and I have learnt a great deal since I came here : in fact 

 I read the paper before. I am naturally interested, because having 

 been brought up at sea the greater part of my life, I am interested 

 in marine faima. I therefore beg to second the resolution of thanks 

 for the paper, Avhich I think will encourage many to study the 

 subject. 



The Author. — I ought to thank you for your kindly reception of 

 my paper, which I can assure you has been a great pleasure to me to 

 MTite, and I ought to thank our Secretary for giving me the hint 

 that I might find something to do in that connection. It has also 

 been a satisfaction to us to hear Mr. Moore take part in this 

 discussion. I see he has now left ; but he practically admits that 

 probably these gasteropods (and I only deal with those) are not of 

 Jurassic origin. I will not go the length of saying they are not, 



