191213] 5 8 7 



Lagan, Brick-field. Porphyritic felsite, hornblendic granite, pro- 

 bably North-east (Scotland). 



The Committee report the purchase of four geological 

 works — " Students' Lyell " by Judd ; " Tertiary Igneous Rocks of 

 Skye ;" " Geology of Ore Deposits " by Thomas and Macalister ; 

 and " The Lost Towns of the Yorkshire Coast " by T. Sheppard. 

 They have added also five micro-sections of erratics to the 

 microscopic slide collection, i.e., Epidote granite with hornblende 

 from Derrybeg, granite invading hornblende rock from Armagh, 

 granulitic felsite from Ballymoney, granite resembling Barnesmore 

 granite from Portstewart, and crushed felsite from Coleraine. 



The Committee acknowledge most gratefully the great 

 assistance rendered by Madame Christen in the glacial investi- 

 gation of numerous districts West of the Bann, which resulted 

 in the successful extension of the distribution of Ailsa Craig, rock 

 to Movs. two miles West of the Roe, to its detection in other 

 localities, and to important additions to the Glacial Geology of our 

 district. To her energy is largely due our fine type collection of 

 "erratics." and her "Summary of Glacial Investigations " is a 

 valuable record of Field Club work. They tender their best 

 thanks to Professor Cole and to Mr. Kilroe for the determination 

 of erratics, also to Mr. Joseph Wright for the determination of 

 Microzoa. They desire to thank Professor Cole for his important 

 paper on "The Problem of the Liffey Valley," and to acknowledge 

 the continued courtesy of the local Press in reporting the 

 excursions and meetings of the Section. 

 (Signed) 



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



Report of the Zoological Section. 



Three meetings of the Section were held during the Winter 

 Session. The first, on 5th February, was in conjunction with the 

 Botanical Section, when Mr. R. LI. Praeger, B.A., M.R.I. A., gave 

 an address on "What do we mean by a ' Native' Species?" At 



