Once established, an original river advances through its long life, manifesting certain peculiarities of youth, maturity and old age, by which its… — William Morris Davis Age Copy Share Image
The more clearly the immensely speculative nature of geological science is recognized, the easier it becomes to remodel our concepts of any… — William Morris Davis Concepts Copy Share Image
The meaning of geography is as much a sealed book to the person of ordinary intelligence and education as the meaning of… — William Morris Davis Book Copy Share Image
The very foundation of our science is only an inference; far the whole of it rests an the unprovable assumption that, all… — William Morris Davis Assumption Copy Share Image
It is the relationship between the physical environment and the environed organism, between physiography and ontography (to coin a term), that constitutes… — William Morris Davis Biology Copy Share Image
