part 1] A^JflYEKSAET ADDRESS OF THE PRE8IDE>'T. IxV 



miles on the Amazon and its tributaries. Later he Avas engaged 

 chiefly in the exploitation of gem-stones in Bm-ma, North Carolina, 

 Ceylon, and New South Wales ; and in particular his memoir on 

 the rubies of Burma, written in collaboration with Prof. Judd, was 

 an important contribution to the natural histor}^ of corundum. 



By the testimony of those who knew him best, Barrington 

 Brown's success as an explorer was made possible b}^ personal 

 qualities which endeared him to men of all kinds, and especially by 

 an evident sincerit}^ which caused him to be universally trusted. 

 In his later years he suffered from the effects of fevers contracted 

 during many tropical journeys, but he had reached his seventy- 

 eighth year when he died on February 13th, 1917. He had been 

 a Fellow of "this Society since 1879. 



He]V'RT Rosales, probably the oldest Fellow on our list, in 

 which his name first appeared in 1877, was well known as a 

 geologist and mining engineer in Victoria for more than sixty 

 years. Born in Spain, he received his training at Freiberg, and 

 went out to Australia, where he was engaged on the Ballarat and 

 other gold-fields of Central Victoria. His first communication 

 to this Society was made in 1855, and he was the author of 

 numerous contributions to mining journals and to the publica- 

 tions of the Greological Survey of Victoria. He also made a 

 valuable collection of minerals, which he presented to the Uni- 

 versity of Melbourne. Retiring from professional life thirty years 

 ago, he continued to take an interest in geological and mining 

 problems, and retained to the last his keen intellectual faculties. 

 He died at Melbom-ne in May, 1916, aged 94. 



Walter Edward Koch was born on March 19th, 1848, and 

 was educated at Marlborough, at King's College, London, and at 

 St. John's College, Cambridge. He adopted the profession of 

 mining engineer, and for the last thirty years of his life was 

 engaged in mining work in various parts of America. He became 

 a Fellow of tliis Society in 1869, and, though he did not contribute 

 to our Journal, always preserved his interest in geolog}^ as well as 

 chemistry. At the time of his death he had in hand a series of 

 experiments on the effects produced in rocks at high temperatures. 

 He died on May 25th, 1916, at El Paso (Texas), where he was 

 manager of the famous quicksilver-mines of Terlingua. 



YOL. LXXIII. e 



