286 Royal Irish Academy. 



His activities were by no means confined to the circle of his 

 College duties. When Dublin was visited by cholera, in 1866, he 

 organized a system of provision against it for the poor, and invited 

 and obtained the co-operation of the students, many of whom still 

 live to remember his noble and inspiring speech at the inauguration 

 meeting in the Examination Hall of Trinity College. He was repre- 

 sentative of the University on the General Medical Council, and took 

 a prominent and useful part in the deliberations of that body. His 

 latest attendance at a meeting of the Council in London was at a 

 time when his health and strength were barely sufficient for the effort. 

 He was an active manager of the Royal Geological Society of Ireland, 

 in the capacities of Secretary, President, and Treasurer, successively, 

 for many years. He undertook the Secretaryship of the Royal 

 Zoological Society of Ireland with its Zoological Gardens in 1864, at 

 a time when some such leader as he was sorely needed to guide it 

 through its difficulties. He worked in his usual style in that office for 

 twenty-one years, and by his assiduity, energy, and resource he carried 

 the Society through crises which, but for him, would probably have 

 been fatal. He was then President of the Society for five years. 



He was for thirty years, from time to time, a member of the Council 

 of the Royal Irish Academy, and President of it from 1886 to 1891. 

 He loyally communicated most of his principal scientific papers to the 

 Academy, which appear in the Transactions and Proceedings thereof. 

 In 1848 the Academy presented him with its Cunningham Gold Medal 

 for his paper in the Transactions "■ On the Equilibrium and Motion of 

 Solid and Fluid Bodies." 



The Royal Society's Catalogue of Scientific Papers enumerates 

 173 of his memoirs on a great variety of subjects, besides a few 

 written in conjunction with others. If we add his papers published 

 by the Academy since 1883, the year to which the above Catalogue 

 comes down, there results a total of, at least, 186. 



Special attention may be drawn to his discussion, in 1854 and 

 1864, of the Diurnal, and of the Semidiurnal, Tides on the coasts of 

 Ireland, founded on the tidal observations made at various stations, in 

 1850 and 1851, under the direction of the Academy — a very laborious 

 and important work. He calculated also, in the publications of the 

 Royal Society of London, the Tides of the Arctic Seas, from the observa- 

 tions made by various voyagers. 



