File:The Horse - its treatment in health and disease, with a complete guide to breeding, training and management (1905) (14591798490).jpg

Identifier: horseitstreatmen09axej (find matches)
Title: The Horse : its treatment in health and disease, with a complete guide to breeding, training and management
Year: 1905 (1900s)
Authors: Axe, J. Wortley
Subjects: Horses
Publisher: London : Gresham
Contributing Library: Webster Family Library of Veterinary Medicine
Digitizing Sponsor: Tufts University

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
'
Text Appearing After Image:
Fig. H67.—Upper Molars of Fossil Ancestors of the Horse a, Hyracotherium; h, Mesohippus; c, Anchitherium;(I, Protohippus; e, Hipparion; /, Horse — 1, dentine;2, enamel; 3, crusta petrosa. The worn or exposed surfaces of the ujDper molar teeth of five of thesefossil animals and of thehorse are represented infig. 667; in order that thedeveloj^ment from the com-paratively simple structureof the tooth of the Hyra-cotherium to the compli-cated details of the teethof the Hipparion and horsemay be more readily fol-lowed, those figures aredrawn of the same size,although in nature thereis a gradual increase insize as well as in com-plexity. Of these examples the first three belong to the brachydont or short-ciowned class, of whicha side view is given at a, fig. 668, whilst the teeth of the Protohippusand Hipparion show an advance towardsthe state of hypsodont or high-crownedteeth (b, fig. 668) which culminates inthe horse (c, in the same figure). Next in chronological order to thePhenacodu

Note About Images