APP. L.] 



APPENDIX 



549 



LATITUDE. 



Latitude. 



Length in Feet of a 



Degree. 



•69 

 -69 

 -69 

 -69 



-70 

 -70 



- 70 



-70 

 ■70 

 •71 

 •71 

 •71 



•71 



•7' 

 ■71 



LONGITUDK. 



Length in Feet of a 



Latitude. 



7V 



10 



20 

 30 

 40 



50 

 72° o' 



JO 



20 

 50 

 40 

 50 

 73° o' 

 10 

 20 



30 

 40 



50 

 74° o' 



30 



40 



50 

 75° o' 



30 



40 



so 



76° o' 



ID 

 20 

 30 

 40 



50 



