8 Eini)U'nt Livimj Geologidn — 



l^apers appended to this memoir will sufficiently indicate these 

 labours, but we may recall attention to one subject that has since 

 attracted a good deal of notice. 



In his paper " On the Brecciated Bed in the Dimetian at 

 St. Davids" (Geol. Mag., 1883, p. 306), he discussed the origin of 

 certain breccias and brecciated conglomerates in homogeneous rocks, 

 and the breaking up and recementing of rock-masses in place. He 

 gave a diagram of a brecciated granitoid rock near Bryngarn. 

 composed of large and small subangular fragments, and this bed 

 (which would now be spoken of as a " crush conglomerate ") was 

 described as " not of transport origin, but represents brecciation in 

 place and subsequent weathering along the joint planes." 



In February, 1891, Sir Archibald Geikie, F.R.S., the President of 

 the Geological Society, announced that the Lyell Medal had been 

 awarded by the Council to Professor T. McKenny Hughes, in 

 appreciation of the value of his investigations in various departments 

 of geolog3% especially among the older rocks. He referred particularly 

 to Professor Hughes' researches in Caernarvonshire and Anglesey, 

 which formed the starting-point to those later inquiries which had 

 done so much to clear up the earlier chapters in the geological 

 history of Wales. " You have," said the President, " not confined 

 yourself, however, to the rocks of any one system or period, but have 

 ranged freely from Arch^an gneiss to raised beach .... with 

 that happy faculty of enthusiasm which, reacting on younger minds, 

 'allures to older worlds and leads the way.' This medal will not 

 only serve to mark the Society's appreciation of your work, but will 

 also connect you by another link with the memory of our friend and 

 master, Lyell." 



Professor Hughes was elected a Fellow of the Geological Society 

 in 1862 and a Fellow of the Royal Society in 1889. 



At the meeting of the International Geological Congress held in 

 Paris in 1878, Professor Hughes was appointed a member of the 

 Commission for the unification of geological signs and geological 

 nomenclature and classification. He was chosen President of the 

 British Committee of Organisation to deal with the subjects of 

 classification and nomenclature. Five sub-committees were formed 

 and their reports were issued in 1885, and revised and amplified in 

 a second edition in 1888. To the latter Professor Hughes contributed 

 an interesting and philosophic preface on the rules which should 

 guide us in our classification of strata, and in our descriptions of 

 rocks, fossils, and geological sections. 



Professor Hughes continued to attend the meetings of the Congress 

 up to that at Zurich in 1894. 



On the completion of the 25th year of his Professorship, he 

 was entertained by his friends at a public dinner in London, 

 February 26th, 1898, when he was presented with an illuminated 

 address by his students and fellow-workers congratulating him upon 

 the success of the Cambridge School of Geology under his charge. 



Professor Hughes married, November 28th, 1882, Mary Caroline, 

 daughter of the Eev. George F. Weston, Honorary Canon of Carlisle 



