HarigontaU Force, 

 orcbhatex denote 



Ificreasvng crdunqtes de7wte decreasmff westerly (hduwjUiarv. 



Curvt, beyond 

 seruitivt 'paper 



Probable Posvtied 

 of' the. carve/ 



W 3^ .40 50 



20 30 40 60 



20 30 1 JO 6 



