MOUNT RAINIER 



Having a full knowledge of all the available data, 

 I am perhaps better prepared than anyone else to pass 

 judgment upon the result set forth ; and while it would 

 be folly to give a numerical estimate of the probable 

 error, I feel justified in saying that no single barometric 

 determination is ever likely to prove more accurate 

 than this one of Professor McClure's. At any rate, 

 the outstanding error is now too small to justify the 

 hazard of any future attempts. 



From the observations made by Professor McClure 

 while en route to the summit, together with simulta- 

 neous records from Seattle and Portland, the following 

 altitudes are obtained : 



FEET ABOVE 

 SEA LEVEL 



Eatonville .................. 870 



Kernahan's ranch ............... 1,880 



Longmire springs ............... 2,850 



Mazama camp ................ 5>932 



Camp-No-Camp ................ 12,700 



South side Crater Rainier 



The data in these cases were not sufficient to admit an 

 elaborate working-out of the altitude, so that the figures 

 given are to be regarded as rather close approximations, 

 except in the case of Mazama camp, the altitude of 

 which rests upon four observations and is correspond- 

 ingly reliable. 



Professor McClure's barometer had a notable his- 

 tory in mountaineering. To quote the professor's 

 own words : 



" It has twice looked upon the beauties of the Colum- 

 bia river from the summit of Mount Hood. It was the 

 first barometer taken to the top of Mount Hood, and 

 gave the true elevation, 11,225 f eet > in place of 17,000 

 or 18,000 feet previously claimed. This barometric 

 measurement of Mount Hood was made in August, 

 1867, by a government party under the direction of 

 Lieutenant R. S. Williamson. The second barometric 

 measurement of Mount Hood was made with the same 



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