130 TRANS. OF THE ACAD. OF SCIENCE. 
known and {eld suggestive. Indeed, as A. v. Humboldt 
remarks when mplainin; of the perishability of hypothetical 
ideas eas once considered page e, in most cases * was onl the 
case 
; m within the sch and 
mit ma deduction from, or passive pilocpuestie of, the objee- 
SS ite i significant appreciations and classifications 
rey 0 involves the repeated and multifariously 
es of view of millions of intellects, 
‘more or tele qualified observers and thinkers; 
