Fio 7. 



Phii :•/„<, Vol ' j. 

 Descants!. JPascal J. 



Icon. - 



Fig. 4. 



70 20 30 40 SO 60 



T W 



-fig 5 / '-/ 



Iir/ n 

 Peak upon C Yoltam: 



ondil/ar X heanny S 2 miles distant . 



