Vol. 69.] ANNIVERSARY ADDRESS OF THE PRESIDENT. lxV 



Survey in the Silurian rocks of the South of Scotland, led him to 

 the conclusion that the Ccelolepidoe, though not actual sharks, 

 had probably a common origin with the primitive Elasmobranchs. 

 He also showed that the armour-plates of the genera Psammosteus, 

 Drepanaspis, Pteraspis, and Cephalaspis had been formed by the 

 fusion of the Ccelolepid scales one with the other and with hard 

 tissue developed in a deeper layer of the skin. 



To Scottish geologists his services were of the highest value, on 

 account of their bearing on the stratigraphy of the Old Red Sand- 

 stone and Carboniferous formations. He had a thorough knowledge 

 of the vertical range and distribution of the fossil fishes contained 

 in these two systems in Scotland. By means of the fishes he 

 arranged the Carboniferous rocks in two great divisions, drawing 

 the boundary-line about the horizon of the Millstone Grit. .Fol- 

 lowing the classification of Murchison and Salter, he regarded the 

 Orcadian rocks as of Middle Old Red Sandstone age, and pointed 

 out the existence of three fish faunas in that division in Caithness. 

 Advancing further, he called attention to the occurrence of three 

 fish faunas in the Upper Old Red Sandstone on the south side of 

 the Moray Firth, the highest of which (Rosebrae) yielded an assem- 

 blage similar to that found at .Dnra Den. 



The artistic restorations of fossil fishes with which he enriched 

 his memoirs are worthy of special mention. They have been fre- 

 quently reproduced in geological publications. 



Traquair was elected a Fellow of the Geological Society of 

 London in 1874, and of the Royal Society in 1881. In 1878 and 

 1901 respectively the Royal Society of Edinburgh awarded to him 

 the Keill and the Macdougall-Brisbane Medals ; in 1901 the 

 Geological Society awarded to him its Lyell Medal, and in 1907 he 

 received from the Royal Society one of its Royal Medals. In 1893 

 he received the honorary degree of LL.D. from the University of 

 Edinburgh. He died on November 22nd, 1912. [J. H] 



R. Bruce Footb, who died on December 29th, 1912, joined the 

 Geological Survey of India in September 1858, and retired in 

 September 1891. His service was almost entirely spent in the 

 Madras Presidency, where he examined and described, in conjunc- 

 tion with Dr. W. King, the Kadapah and Karnul Systems ; our 

 knowledge of the Upper Gondwana and the Cretaceous of the 

 eastern coast is very largely due to his labours, as also the 

 recognition and separation of the Dharwar System. Though 



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