MAP 7. 



Jour. Sc. Cell. Vol. XIV. PI. XCIV. 



LINES QF EQUAL VERTICAL COMPONENT (Z) FOR 1895,0 



DISTURBANCES OF VERTICAL COMPONENT 



C or O.OOOUl C a. H. Units. 



I'll} Fii/ims indicate that tlic Vei-tical Component /.f Grcati'r than the Calmtahd Value. 





} ... 



