THE STUDY OP HYDRO- AROMATIC SUBSTANCES. 101 



of 1 : 1 : 2-trimethylcyclohexan-3-ol has been isolated. These alcohols 

 give rise to the corresponding ketones on oxidation, but here again only 

 1:1: 2-trimethylcyclohexan-3-one has been isolated in a pure con- 

 dition. Further experiments are now in progress. 



Investigation of the Igneous and Associated Rocks of the Glensaul ana 

 Lough Nafooey Areas, Cos. Mayo and Galway. — Report of the 

 Committee, consisting of Professor W. W. Watts (Chairman), 

 Professor S. H. Reynolds (Secretary), Mr. H. B. Maufe, and 

 Mr. C. I. Gardiner. 



Mr. C. I. Gardiner and the Secretary visited the district in April and 

 finished mapping the Kilbride peninsula. The general structure of this 

 area was given in the Committee's report for 1910 (Sheffield), and 

 except that a new exposure of Arenig sedimentary rocks has been found, 

 the present year's work, though adding much to the detailed knowledge, 

 has not led to the discovery of any facts which it is necessary to mention 

 in the present report. It is hoped that a paper on the Kilbride penin- 

 sula will be read before the Geological Society during the coming 

 session. 



Erratic Blocks of the British Isles. — Report of the Committee, consisting 

 of Mr. R. H. Tiddeman (Chairman), Dr. A. R. Dwerryhouse 

 (Secretary), Dr. T. G. Bonney, Mr. F. M. Burton, Mr. F. W. 

 Harmer, Rev. S. N. Harrison, Dr. J. Horne, Mr. W. Lower 

 Carter, Professor W. J. Sollas, and Messrs. Wm. Hill, J. W. 

 Stather, and J. H. Milton. 



Reports have been received from the Belfast Naturalists' Field Club, 

 the Hull Geological Society, the University of Durham Philosophical 

 Society, and the Rev. A. Irving, D.Sc. 



During a recent visit to the North of Ireland in company with the 

 Secretary, Mr. B. N. Peach, F.R.S., was able to identify certain 

 erratics found at Cushendall, co. Antrim, as derived from the Island 

 of Arran. These included a Quartz Porphyry from Drum-a-Doon and 

 granites probably derived from the Goat Fell area. It is hoped to 

 deal more fully with these in the next report. 



Ireland. 



Reported by the Committee of the Geological Section of the Belfast 



Naturalists' Field Club. 



Co. Down. 



Bally tvalter. — Low bank of unstratified brown boulder clay, at 

 sea-level, on coast one mile south of Ballywalter. Subjacent rock, 

 Silurian grit. Out of 9G boulders noted, the following were erratics: 



