FIGURE 21 



CAMP ZIE6LER 



ZIEGLER POLAR EXPP. 



JUNE - .JULY, I90S . 



Ss-^ .... 



Contour Jnfvrvafs ■/" ^fA approxi^nrttt/ • 



;an« ta.6J^ m\Mi> ^ Ji.'tr. Porter , -UTutfr Aif-toHon, o€ W.j.Fmit^r'f . 



