184 



THE PRINCIPLES OF SCIENCE. [CHAP. 



*"< ~ cONf^C^ 1 -*^" 1 ^ 



o SC .- ro r^ . rf^t 



rt X 



e c ;7 

 E^^_ 





O xr > "-* CXD *O u^'u*^\OCO w LT> O 



8J^r 



- CO 't iovO t-CC O> O "-" 



