McCLURE'S ACHIEVEMENT AND TRAGIC DEATH, 1897 



instrument in August, 1870, by Professor George H. 

 Collier." 



In August, 1891, the barometer was carried by 

 Professor McClure to the summit of Diamond Peak ; in 

 August, 1894, by the writer, to the summit of the middle 

 peak of the Three Sisters, in Oregon, giving an altitude 

 of 10,080 feet, not hitherto published; in July, 1895, 

 Professor McClure took it with the Mazamas to Mount 

 Adams, and in July, 1897, to the summit of Mount 

 Rainier. 



A new tube was filled and inserted about two years 

 ago, Professor McClure preparing the mercury by 

 distillation and the writer boiling it in the tube. The 

 vacuum was exceptionally perfect. The comparison 

 sheet previously mentioned snowed that the instrument 

 on the occasion of its last trip read .0x35 inch above 

 standard. 



In thus completing the labors of Professor McClure, 

 with whom I was so long and so intimately associated, 

 I feel a very melancholy satisfaction. For his sake, I 

 have spared no pains in collecting all the useful data 

 that could be obtained, to make the result reliable to 

 the last degree possible in such a case. I leave that 

 result as a sufficient guarantee of the accuracy of the 

 whole work from beginning to end. 



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