1 6 Proceedings of the Royal Irish Academy . 



down with them, spent ten days working the Mosses and Hepatics of the 

 island and of the Louisburgh district. 



During the season the geology of the island engaged the attention of the 

 staff of the Geological Survey. J. B. Kilroe, E. Clark, and T. Hallissy were 

 all at work, and the revision of the "solid" map, as well as new drift and soil 

 maps, was pushed forward. 



1910. 1 



The first working party of 1910 took the field at Easter, which fell in the 

 last week of March. F. Balfour-Browne and A. W. Stelfox worked for Water- 

 beetles and Mollusca respectively in the Louisburgh, Westport, and Achill 

 districts, the latter subsequently proceeding to Belmullet. On the island 

 W. J. Lyons set up meteorological instruments, Prof. C. J. Patten studied 

 the Birds, and E. LI. Praeger completed his vegetation map. All returned in 

 about a week. On March 31 P. J. Lewis commenced his work on the peats 

 of the district, and spent ten days on the north side of Clew Bay, camping 

 out in very severe weather. 



A special Clew Bay marine party took up their quarters at Belclarc from 

 May 6 until May 12, and devoted a tempestuous and bitterly cold week to 

 shore-collecting and dredging. N. Colgan added considerably to his list of 

 Marine Mollusca ; Miss Stephens collected Sponges ; A. E. Nichols, Polyzoa ; 

 W. Eankin, Decapoda ; and Miss M'Nab and E. LI. Praeger rendered general 

 assistance. In addition to the groups mentioned, a good deal of collecting 

 was done in a number of other groups. 



The Fresh-water Algae of the island were worked on May 14-22 by 

 the late William West, who also made valuable collections of Lichens and 

 Bryophytes. 



On June 6, Eev. W. F. Johnson and Mrs. Johnson went west, and carried 

 out nearly four weeks' insect-collecting in the Achill and Mulranny districts. 

 They were joined two days later by W. F. de V. Kane and T. Greer, who 

 did a week's work at Lepidoptera at Achill Sound before crossing to the 

 island. 



Prof. Cole and T. Hallissy examined the geology, and especially the 

 glacial features, of the district between Westport and Achill, on June 14-15, 

 when, after a day's work on the island, they visited the Louisburgh district. 



On June 16 a large party crossed to the island, comprising A. D. Cotton 

 (Marine Algae ; , A. C. Forbes (Forestry), T. Greer and W. F. de V. Kane 

 (Lepidoptera), H. Wallis Kew (Pseudoscorpiones, &c), Paul Kuckuck (Marine 



1 Portion of a Report laid before the Eoyal Irish Academy, 17th February, 1911, and published 

 i the " Irish Naturalist," April, 1911. 



