The Scientific Monthly, Volume 23

American animals appear Aristotle atoms biological type birds body cause cent century China color CUICUILCO culture Descartes disease earth effect ence energy entomologist ether evidence evolution existence experience fact feet Fiji Finger Lakes fossils heat human hundred ical increase Indian individual interest known lakes land larvae latex less light lines living matter means ment mental method metric system miles million mind modern moths mountain MURPHYSBORO nature observations Ontarian River Ordovician organization physical picture plants population possible present problem produce Professor promethea public health question River rock rubber scientific seems social species stars tain temperature theory theory of relativity things thousand tion to-day tornado totem pole trees ture United UNIVERSITY valleys West Frankfort writer