The American Naturalist, Volume 21Essex Institute, 1887 - Natural history |
Contents
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Common terms and phrases
Algæ Amer AMERICAN NATURALIST animals antennæ appear Argillite augite become beds blastocyst blastopore body botany called Cambrian cells character chromatin color contains Cope County crystals cultivated described division embryo Emmons endoderm Eskimos fact fauna feet female formation fossils gametes Gard gardens gastrula gemmules genera genus geological germinal germinal vesicle glaciers Graywacke Hist hornblende hornless horns hundred inches insects Island karyokinesis known Lake larvæ latter layer limestone lower male mesoderm Metazoa microsomata miles mineral nature North nucleolus nucleus observed occur organs origin ovum paper paranucleus plagioclase plants plate polar globules portion present primitive probably Proc Professor pronucleus protoplasm recent regarded region reticulum River rocks sandstones schists seen segmentation side Silurian species specimens spermatozoon structure surface Taconic slate Taconic system tion U. S. Geol valley varieties Vilmorin XXI.-NO