1903. Proceedings of Irish Societies. 85 



appearance of specimens brought up by the dredge. Ten of the 

 samples were from altitudes of 500 feet and upwards, all of which with 

 one exception, contained foraminifera. In the clay at Knock Glen, near 

 Belfast, and Woodburn Glen, near Carrickfergus, foraminifera occurred 

 in the greatest profusion. In one ounce of the clay from the latter 

 place 2,000 specimens were obtained. Five of the species found at 

 Woodburn, and three of those from the Knock, were only known as 

 recent British forms from West of Ireland gatherings, two of them also 

 occurring off the West coast of S'lotland. Some of these West of Ireland 

 forms had also been found in Boulder clay at other places. Lagena 

 fimbriata was got at five other localities, one of them being Larch Hill, 

 County Dublin, 650 feet above the sea ; and Polystomella subnodosa was got 

 at Dippel Burn, Ayrshire, at 1,061 feet elevation. The presence of these 

 West of Ireland foraminifera in Boulder clay would lead us to infer 

 that the clay at Knock and Woodburn was deposited when the land 

 stood at a much lower level than now, and when the marine conditions 

 at these places must have been somewhat similar to what now prevailed 

 off the west coast of Ireland. Reference was made to the slow down- 

 ward movement of glaciers by gravity, that when they terminated in 

 the sea, as they frequently did in Arctic regions, they sooner or later 

 broke off into large masses floating away as icebergs, carrying with 

 them any stones or other material which they had accumulated in their 

 course; that, as ice when submerged beneath the sea diminishes far 

 more rapidly than when in air, the bergs quickly melt away, depositing 

 their burdens over the floor of the ocean, and to this cause, as also to 

 the action of shore ice, he largely attributed the formation of Boulder 

 clay. The occurrence of marine organisms so generally distri- 

 buted through the clay at .such varied and distant localities, from the 

 sea level to high up on mountain slopes, in his opinion gave convincing 

 proof that this clay, in the great majoritj- of cases, was deposited in the 

 sea, and not on the land. 



Miss Andrews' notes referred chiefly to the junction of granite and 

 Silurian rock in the bed of the Glen River, Newcastle, to certain dykes 

 on the Mourne coast, and to a few of the rhyolites of County Antrim. 

 The paper was mostly illustrated by slides from Miss Andrews' geo- 

 logical photographs and microscopic sections of specimens she had 

 collected. The dykes on the sea coasts described included the 

 composite dyke at Glasdrumnian Port, and in connection with this two 

 slides were shown from ]\Ir. Welch's Irish geological views, illustrating 

 the igneous contact described by Professor Cole. The occurrence of 

 variolite at Dunmore was shown, and, with other specimens, one was 

 shown from the bed of the Salt-water river, the first variolite discovered 

 in Australia. A large acid dyke in Newcastle was described, having 

 characteristics both of the rhyolite and quartz felsite types. The con- 

 nection between the Mourne granite and the Antrim rhyolites was 

 referred to, and the rhyolite quarry at Templepatrick railway station 

 was shown on the screen— of extreme interest on account of the 

 evidence obtained there by Mr. MacHenry as to the age of the Antrim 



