SOLAR ECLIPSE, MAY 6, 1883. 



45 



The readings of the aneroid barometer have been reduced by appl^'iiig the corrections for 

 instrumental error, temperature, and elevation. These have been obtained as follows: 



REDUCTION OF OBSERVATIONS MADE WITH ANEROID I5AR0MKTKR, HOTTINGER, 3241. 



Comparisons between aneroid barometer, Hottinger, 3241, and mercurial barometer, Green, lit.'JG. 



Temperature corrections to bai-omrtcr, Hottinger, 3241. 

 I Kurni.slu'd by maker. I 



t. 



o 



7G 



80 



84 



Corr. 

 in. 



— 0. 00 



— 0. 07 



— 0. 085 

 88 — 0. 10 

 92 — 0. U 



Elevation of instrument above sealevel, 10 feet. Reduction to .sea-level, + 0.01 inch. 

 Combining these reductions we have the following table by which the barometer readings in 

 the column "Reduced reading" are obtained from the observed readings : 



