2 4 4 



[Pre 



In conclusion, the Committee record with deep regret the 

 death of one of the Members of our Section, Mr. Thomas 

 Anderson, who, two years ago, gave us an interesting description 

 of the Geology in and around Charnwood Forest,* and whose 

 valuable account of the Geology of the Dublin District! was 

 published in our Proceedings for last year. 



(Signed) 



Mary K. Andrews, Hon. Sec. of the Section. 



Report of the Zoological Section. 



During the year there have only been two meetings of the 

 Section. At the first meeting held on 8th December, Mr. W. J. 

 Dakin, M.Sc, read a most interesting paper on "Toxic Effects of 

 Fresh Water on Marine Animals, and of Sea-Water on Fresh- 

 Water Species," in which he described experiments carried out by 

 himself upon certain marine fishes, notably the plaice, while he 

 was at the Biological Station at Heligoland. Mr. Dakin has 

 already published this work in two papers in the Bio-Chemical 

 Journal, Vol. III., Nos. 5 and 10, 1908. 



On the 2nd March, Mr. R. Welch, M.R.I. A., gave a discourse 

 upon " Variation due to Environment, illustrated mainly, by the 

 Mollusca," during which he showed numerous varieties of many 

 common snails found in different localities in England and Ireland; 

 and he showed that temperature and differing conditions of the 

 water had definite effects upon the size of various water species, 

 such as Limna'a peregra. 



Several members of the Club have published Zoological 

 papers or notes during the past year. Mr. R. Patterson has 

 carried through a revision of the " Birds and Fishes of Carrick- 

 fergus District " for a new edition of Miskimmin's History of 



* Annual A'eport and Proceedings of the Belfast Naturalists' 1 Field Club, 

 1907-08, p. 87. 



t Ibid, 1908-09, p. 184. 



