THE ROYAL DUBLIN SOCIETY 377 



he has enriched our laboratories with accurate instru- 

 ments of research." The list of Dr. Joly's contribu- 

 tions to science appended to the report extends, 

 between 1883 and 1910, to eighty-one publications, 

 many of which appeared in the Society's Transactions and 

 Proceedings. 



The most recent occasion on which the medal was 

 awarded was in 1912, when it was conferred on Sir 

 Howard Grubb, F.R.S. His contributions to the 

 scientific publications of the Society covered a period 

 of forty-two years. Most of these took the form of 

 communications on improvements in the construc- 

 tion and mounting of telescopes and other optical 

 instruments. It was, however, more especially for the 

 skill and ingenuity exercised in the actual construction 

 of the instruments that Sir Howard Grubb's name 

 was selected. His achievements include the great 

 Melbourne telescope, the first large reflector mounted 

 equatorially ; the Vienna refractor, then the largest 

 refractor in existence ; the Greenwich refractor, and 

 many other optical instruments, including a new form 

 of gun-sight, and the submarine periscope. 



RADIUM INSTITUTE 



At the suggestion of Professor John Joly, F.R.S., 

 in February, 1914, the Science Committee recom- 

 mended the Council to establish a Radium Institute, 

 and to contribute a sum of 1000 towards a fund 

 for the purchase of radium, in addition to the sixty 

 milligrammes of radium bromide which the Society 

 had purchased ten years ago. This the Council agreed 

 to do. To carry out the object in view, a large sum 

 of money was required, and Lord Iveagh at once 

 undertook to contribute 1000, Sir John Purser 



