Plate 11. 



I n II I lK ly ^ Y'f^ , -t SiiOiaamt^eaimmmmUamMaamSMmmM^^HBm 



lOO IXO ItO 1^0 ttO 300 120 arO 2*0 



Ti^ iB K^^ 



3(^ JXD 



■«*() xro — 



U0 ArO J*0 '«» J00 UO IM 



ato veo •>•>• 



Tl^ IT K^, 



It' 109 txo f'ytf /to •»•• 



I 



troscopic Measurements. 



