356 CROSS. 



Fund. In addition to these there was given a list as reported by 

 their authors of all published researches which had received aid from 

 the Rumford Fund but which had been published elsewhere than in 

 the publications of the Academy from 1892 to 1912. Prior to 1892 it 

 had been understood that researches thus aided should be presented 

 for publication to the Academy. 



At the time of issue of the ' Supplement ' it was felt by the Com- 

 mittee that it would be well regularly, perhaps every five years, to 

 continue the lists of grants and published papers up to date. 1917, 

 however, was not a favorable time for doing this, and it was evident 

 that in any event such regular publication would most conveniently 

 begin at the end of the second decade of the century. It seemed 

 best also to print future publications of the kind in the Proceedings 

 of the Academy. 



The list of grants now published includes all from the beginning 

 down to and including December, 1920. They have also been num- 

 bered, every entry being included for convenience of reference, al- 

 though it may not indicate actual appropriation of funds. A complete 

 list of the awards of the Rumford Premium is also given. 



It is intended shortly to publish a continuation of the lists of pub- 

 lished papers up to and including December, 1920. 



Awards of the Rumford Premium of the American Academy. 



1839. Robert Hare, of Philadelphia, for his invention of the com- 

 pound or oxyhydrogen blowpipe. 



1862. John Ericsson, of New York, for his improvements in the 

 management of heat, particularly as shown in his caloric 

 engine of 1858. 



1865. Daniel Treadwell, of Cambridge, for improvements in the 



management of heat, embodied in his investigations and 

 inventions relating to the construction of cannon of large 

 calibre, and of great strength and endurance. 



1866. Alvan Clark, of Cambridge, for his improvements in the 



manufacture of refracting telescopes, as exhibited in his 

 method of local correction. 



1869. George Henry Corliss, of Providence, for his improvernent 

 in the steam-engine. 



1871. Joseph Harrison, Jr., of Philadelphia, for his mode of con- 

 structing steam-boilers, by which great safety has been 

 secured. 



