50 
, ing 
life, and so a new . .• 0 f existing races and tlie 
work leading to the. Jmcta d e g ^ 
development out of the ^vm^g especially has well 
changes, moreover, as P ^ particular places 
r?r-i r .aSw— a- »«»»« «"» 
'“tSV S “s’ «««£ 
^rssfgim^st s tiSAsru 
inheritable variation to “n f h a w aS eventually 
being taken bold ol and preserve ces> This being 
to lead to their a PP e«mee *1'“"“™“^ mt ,d tl ‘ 
known to exist ; that is, ^hat^it m a ^ conclugioll) it will be 
Before, however, fu y ter g . int alluded to above, the 
“S ir*£e»ce». How, taking.*!,, tojrfta* - » 
that all Pj- - 
from the same prog^i , Darwin’s hypothesis suppose 
s?=SJ£> y* r*r — s tsr-ar- 
By single strides ? No; tat if » ““S’.t tie foot of 
S 5 Blanc, ’viewing 
reached the top, and then. “glaciers that lay between, 
igrhts P cfd\c7.« 
with' ItaS’ lf Not hjl sudden transition from class to 
