VOL. XXXII, No. 377 MAY, 1898 
IHE 
AMERICAN 
NATURALIST 
A MONTHLY JOURNAL 
DEVOTED TO THE NATURAL SCIENCES 
IN THEIR WIDEST SENSE 
CONTENTS 
I. The Origin of the Mammalia . š HENRY FAIRFIELD OSBORN 
II. The Wings of Insects, III. n BRAE ed z. COMSTOCK and J. G. NEEDHAM 
III. Classification of the Amioid and Lepisosteoid Fishes . . . . 0. P. HAY 
IV. Editorial: A Plea for Systematic Work. 
V. Reviews of Recent Literature: Anthropology, Social Organization of the Kwakiutl 
Indians, The Graphic Art of the Eskimos— General Biology, Chemical Changes _ 
in Plant Stimulation, Dissimilar Reciprocal Crosses, Scientific Agriculture — __ 
Zoology, The Sea Otter, Pacific Coast Annelids, Regeneration of the Earth- eoo 
worm’s Head, Two Papers on the Finer Structure of Nerve Cells, Forestal 
Zoology, Zoological Notes — Botany, The Floral Plan of the Cruciferæ, o 
Zinsser on Root Tubercles of Leguminosæ, Recent Studies of Asarum, 
Combs’s Flora of Santa Clara Province, Central American Botany, Eniphy- a 
lous Flowers, Forest Trees, The Work of Aldrovandus, Botanical Notes— 
Geology, A New Edition of Dana’s ie ee a ee 
Edition of Fuchs’s Determinative Mineralogy, Hardness of Minerals, Tables 
of Crystal Angles, Gusieges of Mn 
VI. Scientific News. 
VII. Onitepinkiten: Birds of the Galapagos Archipelago. 
TUL Publications Received, 
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