ON THE LINE OF THE MEXICAN BOUNDARY SURYET. 



377 



X - 1.485 log. = 0.171726 

 !/ = 0.271 " =1.432969 



tang Z = 0.738757 Z = 79° 39' 



(No. 2.) 



YOL. Y. NETV SERIES. 



x--{- 0.444 



y-— 0.039 

 51 



