Popular Science Monthly, Volume 79

activity agriculture albumin American animals become biological body Buffon cells century character chemical chemistry Chinese classical coal color course disease effect English experience fact forces Francis Galton Galton gametes German grammatical Greek heliotropic Hippocrates human ical important increase individual influence insects institutions interest J. J. Thomson Katalla knowledge Kushtaka labor laboratory language large number larvæ Latin learning less light living mathematical matter means medicine ment mental Metazoa meteor method micronucleus mind modern moral museum nature observed organs origin parasites phenomena phonetic phosphorescence physical plants polyembryony possible practical present principle problem produced Professor progress protoplasm Protozoa question race Sacculina scientific seems social society species teachers theory things thought tion to-day tropisms vegetarian Vineland words zoologists zoology