APPENDIX 



MEDALS AWARDED BY THE ROYAL SOCIETY 



The COPLEY MEDAL, founded in 1736 under the will (1709) of 

 Sir Godfrey Copley, Bart., F.R.S., is awarded annually for dis- 

 tinguished philosophical research, and irrespective of nationality. 

 It takes rank as the premier award of the Royal Society. It is 

 struck in gold. 



The RUMFORD MEDAL, founded by Count Rumford in 1796, 

 is awarded biennially for the most important discoveries in heat or 

 light during the preceding two years. The medal is struck in gold 

 and in silver. 



Two ROYAL MEDALS founded by George iv., and since continued 

 by the grace of successive Sovereigns, are awarded annually for the 

 two most important contributions to the advancement of Natural 

 Knowledge published originally in the British dominions, within a 

 period of not more than ten and not less than one year of the date 

 of the award. They are struck in gold and in silver. 



The DAVY MEDAL, founded in 1869 under the will of Dr. John 

 Davy, F.R.S., brother of Sir Humphry Davy, is awarded annually 

 for the most important discovery in chemistry made in Europe 

 or Anglo- America. It is struck in gold. 



The DARWIN MEDAL, founded in 1890, by subscription, is 

 awarded biennially for work of distinction in the field in which Mr. 

 Charles Darwin himself laboured. It is struck in silver or bronze. 



The BUCHANAN MEDAL, founded in 1894, by subscription, is 

 awarded every five years in respect of distinguished services to 

 hygienic science or practice, in the direction either of original 

 research or of professional, administrative, or constructive work, 

 without limit of nationality or sex. It is struck in gold. 



The SYLVESTER MEDAL, founded in 1897 as an international 

 memorial of the late Prof. J. J. Sylvester, F.R.S., is awarded 

 triennially for the encouragement of mathematical research, irre- 

 spective of nationality. It is struck in bronze. 



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