INI 1 .1 I \CE8 OP ENVIRONMENT 



151 



Isolation affects not only the physical characters of 

 the peoplf l>ut t tnral development as well. Sep- 



arate^ fi-Min Hi' -treara of collective < ice by moun- 





Fustic 54. Native, adapt t. dangrroua c 



.-.iu.lhn- M: 



of India. 



tain or sea, IIH n r. tain . i-toms and usages which 



have long since fallen into .ii>us(> in the tlironging centers 

 of lift* on tin* neiKht>orintf plain or continent Sardinia 

 ami Corsica are two of tin- mo>t primitive spots in all 

 pe because they are islands off the main line. To 

 :i larir* 1 u<i:il in>titutinns of the Middle Ages pre- 



vail. The old wooden plow of the Romans is still in 



