Popular Science Monthly, Volume 73

Algonquian American animals appears Aryan average bacteria become body botany cent character cities course crops Dimetrodon disease engine Eningen enzyme evolution excretions experience fact Falls feet fish fishery fossil groups heat human humor important increase institutions interest Iroquois J. J. Thomson Joule known Lake land language Lenape less living Lord Kelvin mathematics matter means ment mental methods milk mind Mississippi nature nearly Niagara Niagara Falls Niagara River ONTARIO POWER organic philosophy physical physiological physiological psychology plants pounds practical pragmatism present president problem produced Professor Prussia psychology question race radium Red Fife region relation river Rumford scholarship scientific side Siouan social society soil species sturgeon teachers teaching theory things tion to-day trees University wheat York zoology