ERRATA IN VOLUME 6. 



Page XLVI. December 2, a. m. For " 980" read "180." 

 " XLVIH. Notes. For " c Three observations" read "c Four observations." 



" 249. November 15, 6 A. M. Dry thermometer " 64. 4" should probably have been recorded "54. 4." 

 " 250. November 17, 6 A. M. Standard thermometer " 57. 0" should probably have been recorded " 67.0." 

 " 250. Third line of note to August 9, for " difference of ranges" read "differences of range." 



