AT SANTIAGO DE CHILE. 



153 



Remarks. 



There were two sharp earthquakes at an interval of 12t. about 6A. 12m. p. m., and their effect ncema to have been to change the atmospheric con- 

 dition. Planet and tar are at one instant steady, and before half way across the field, blurred and jumping in a most extraordinary manner. The 

 measure*, therefore, could not have been very good, even had there not been the additional difficulty <>i endeavoring to keep Mars on the middle wire, 

 with the tangent screw, whilst the micrometer wire was moved to bisect the star. Thus only one reading of the mi.crom< U.T appears, the star being 

 that number ol revolutions to the north of the planets 1 limbs. 



a The three preceding observations are not incorporated into the meant. 



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