BrittonandCresson.] dOo [Nov. 6, 



He died of the disease of the heart, on the 10th of November, 1874 ; at 

 which time he was within fifteen days of being eighty years old. He was 

 buried in the burial-ground attached to the Friends' Meeting House, at 

 Wrightstown, Bucks County. His widow and one son constitute his sur- 

 viving family. 



A number of the facts contained in this brief biographical notice, have 

 been communicated to the writer by Mr. Trego's son, Mr. F. A. Trego, 

 who has sought among his father's papers since his death, for his private 

 j ournal, but has not been able to find it. 



In looking back over the life of Mr. Trego, we see that while it was not 

 distinguished by any very remarkable incidents, he has left behind him a 

 good record. 



He maintained the good i-eputation of the race from which he was de- 

 scended ; and living to the age of nearly four score years, he was useful 

 to the end of his career, and as the faithful Treasurer of the American 

 Philosophical Society, and the collector and disburser of its funds for 

 nearly a quarter of a century, his memory well deserves to be honored by 

 the members of the Society, as that of a good citizen, a lover of science, 

 and a faithful steward of the talents with which he was intrusted. 



ANALYSED OF ROCKY MOUNTAIN COAL. 



By J. Blodget Britton and C. M. Cresson. 



{Bead at a Meeting of the American PMlosopMcal Society, Nov. 6, 1874.) 



The four coals from east of the Rocky Mountains and on the line of the 

 Union Pacific Railroad, exhibited at the meeting held on the 6th ult. , I 

 have since analyzed for metallurgical purposes, with the following results : 



Carbon CoAii, prom the Mine at Carbon. 



{Sample consisted of several pieces, and weighed 12 lbs.) 



Water 12.50 



Volatile combustible matter . . . , 35.47 



Fixed carbon 44.96 



Ash 7.07 



100.00 



One hundred parts of the raw coal gave of coke 52.03 



The coke was composed of 



Carbon 86.42 



Ash 13.58 



100.00 Including sulphur 1.03 

 Phosphorus ...... trace 



