. The Quarterly journal of the Geological Society of London. nland seemed to be identical with those of Bardsey, and,although he had not yet examined any rock-slices of the former,Tie expected that many of them would prove to be olivine-dolerites. It was a pleasure to see a former worker in Bardsey present onthis occasion, and he paid a tribute to the value of Miss Baisinswork in that island and on the mainland, especially with regard tothe igneous rocks. In regard to the glaciology, he was sorry to have over-looked Mr. Fearnsidess record of a south-easterly ice-movement inMerionethshire. Much
. The Quarterly journal of the Geological Society of London. nland seemed to be identical with those of Bardsey, and,although he had not yet examined any rock-slices of the former,Tie expected that many of them would prove to be olivine-dolerites. It was a pleasure to see a former worker in Bardsey present onthis occasion, and he paid a tribute to the value of Miss Baisinswork in that island and on the mainland, especially with regard tothe igneous rocks. In regard to the glaciology, he was sorry to have over-looked Mr. Fearnsidess record of a south-easterly ice-movement inMerionethshire. Much more would have to be done before theglaciation of South-Western Carnarvonshire could be regarded asfully understood. He had looked upon Dr. Jehus discovery ofboulders of Mourne-Mountain rocks in Pembrokeshire as evidenceof radiation of ice from Ireland into Cardigan Bay, but, in view ofMr. Lamplughs remarks, was now inclined to accept the lattersopinion that they came from the bed of the Irish Sea and not fromIreland itself. ^sonian •U. J. G. S. No. 27. 534 ME. J. PARKINSON ON A GROUP OF [Dec. I913,. 24. On a Group of Metamorphosed Sediments situated betweenMachakos and Lake Magadi in British East Africa. ByJohn Parkinson, , (Read June 11th, 1913.) [Plate LI—Microscope-Sections.] In the latter half of 1911, I had the opportunity of examining agroup of crystalline rocks situated immediately below the southernedge of the great lava-plateau of the Kapiti Plains, and embracingmany varieties of reconstructed sediments, from quartz-schists tohighly crystalline marbles. Scattered outcrops of similar rockshave been described by Mr. Maufe from other localities in The rocks here described were found in approxi-mately lat. 2° S. and long. 37° E., and, so far as I was able tofollow them, form the ground drained by the headwaters of theTuroka River, a designation which I think might well be appliedto the group, as the name is one of the few found on the
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