42 



AJdress. [Per. 



Dk. J. Prescott Joule, F. R. S. wlio died in October last, was 

 elected a special Honoraiy Member on the occasion of the Centenary of 

 the Society in 1884. An expert and persevering experimentalist, he 

 discovered, in 1841, the mechanical equivalent of heat, from which he 

 deduced the law of the conservation of energy, and that energy is in the 

 same degree as indestructible and uncreatable as matter. This law, 

 now -universally recognised, has worked a revolution in science and 

 led to many important discoveries in thermo-dynamics, electro-dynamics 

 and the dynamical theory of gases, as well as in biology. He was for 

 many years closely connected with the Literary and Philosophical 

 Society of Manchester as Secretary, Vice-President and President. 



Among the Ordinary Members — 



Dr. Francis Day, C. I. E., was elected a member of the Society in 

 April 1869, and is best known as the leading authority on ichthyology 

 and fish culture generally, though more particularly in connection with 

 the fish and fisheries of this country. His *■ Fishes of Malabar' appear- 

 ed in 1865, and in 1875 he commenced the publication of his great work 

 on the " Fishes of India ", which was completed in 1878, though a sup- 

 plement was published last year. At the time of his death Dr. Day had 

 completed the MSS. of two volumes on the " Fishes of India " to form 

 part of the new " Fauna of British India " now being brought out under 

 Dr. W. T. Blanford's supervision. These volumes have both been 

 lately published. Dr. Day contributed several papers to our Journal 

 and Proceedings, the principal being his " Monograph of the Indian Gy- 

 prinidcB " and " Notes on Fish collected by Dr. Stoliczka in Kachh." 

 He died on the 10th July, at Cheltenham. 



Dr. D. Waldie was elected an Ordinary Member in November 1865, 

 and at the time of his death was a member of our Council. He had a 

 considerable share in the discovery of the use of chloroform as an anaes- 

 thetic, and was a sound chemist. He contributed several papers to our 

 Journal and Proceedings, chiefly connected with the effective filtration 

 of the Calcutta water supply. 



Mr. B. J. Jones, Deputy Superintendent of the Geological Survey, 

 who died on the 15th October last, was elected an Ordinary Member in 

 August 1884 and contributed papers to the Proceedings " on some 

 nodular stones from the Bay of Bengal." He was a member of the 

 Physical Science and Natural History Committees and promised to be 

 a very useful member of the Society. His premature death is much 

 to be regretted. 



Mr. Otto Christian Rehling Moller was elected an Ordinary 

 Member in December 1883. He was born at Copenhagen in January 

 1848, and was educated as a Civil Engineer, After being employed 



