Encyclopaedia Britannica [28, 11 ed.]

Table of contents :
Cover
Title Page
Initials Used to Identify Individual Contributors
VETCH
VICENZA
VICTORIA
VIGILANTIUS
VILLEMAIN
VINOGRADOFF
VIRGINIA
VISION
VIVISECTION
VOLCANO
VOLTAIRE
VOZNESENSK
WAGNER
WALES
WALLENSTEIN
WALTON
WARD
WARWICK
WASP
WATERLOO
WATER SUPPLY
WATTS
WEAVING
WEBSTER
WEIGHTS AND MEASURES
WEISSENBURG
WENSLEYDALE
WESTERN AUSTRALIA
WEST VIRGINIA
WHEAT
WHITE
WIDDRINGTON
WILDMAN
WILLIAM
WILLIAM
WIMBLEDON
WINE
WIRKSWORTH
WITNESS
WOLTER
WOOD ENGRAVING
WOOSTER
WRECK
WURZBURG
WYVERN
YALE
YEZO
YOUNG
ZARIA
ZIERIKSEE
ZOFFANY
ZOOLOGICAL
ZOROASTER
ZURICH

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THE

ENCYCLOP .tED lA BRITANNICA ELEVENTH

FIRST SECOND THIRD FOURTH FIFTH SIXTH SEVENTH EIGHTH NINTH TENTH

ELEVENTH

EDITION

edition, published in three

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volumes,

ten eighteen

'

twenty twenty twenty twenty-one twenty-two twenty-five

ninth edition and eleven supplementary volumes,

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published in twenty-nine voli.Ulles1

1768-I 7 7 I, 1777-1784. 1788-1797• r8or-r8IO. r8rs-r8r 7. !823-1824. 1830-I842, I853-186o. r875-r88g. 1902�1903•

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COPYRIGHT in

alL countries subscribing

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the ',' of cases sets in ; . the �ody tongue to the mouth and swallowed. In the stomach the embryo emits an unpleasant. odou r ; ulceration of the mouth 1s not1ced ; attaches itself to the mucous membrane, moults three times, m­ the nostrils become obstructed by the dischar�e from .them ; con- creases in size and changes from a blood-red to a yellowish-brown

In

12

VETERINARY SCIENCE

colour. The bot remains in the stomach till the following spring, when it detaches itself, passes into the food and is discharged with the faeces. When very numerous, bots may cause symptoms of indigestion, though frequently their presence in the stomach is not indicated by any sign of ill-health. They are difficult to dislodge or kill. Green food, iodine, naphthalin, hydrochloric acid and vegetable bitters have been recommended ; but the most effective remedy is a dose of carbon bisulphide given in a gelatin capsule, repeated in twelve hours, and followed twelve hours later by an aloetic ball. Of the parasites which infest cattle and sheep mention will only be made of Distomum hepaticum, or common fluke, which causes liver-rot or distomiasis, a very fatal disease of lambs and ID sheep un