carrying on of the war. In the light of the express restrictions of the
Treaty of Washington as exemplified in the war between one of the
parties to that treaty and a third party in 1898, the obligation imposed
upon the United States, impliedly at any rate, by the sixth article of
the mutual agreement of 1871 might be read: "The United States is bound
not to permit Great Britain to make use of its ports or waters as the
base of naval operations against the South African Republics, or for the
purpose of the renewal or augmentation of military supplies."

It would seem obvious that horses and mules when intended for immediate
use in military operations are within the meaning of the term "military
supplies." In numbers of instances horses have been considered
contraband of war. The treaty of 1778 between the United States and
France declared: "Horses with their furnishings are contraband of
war,"[52] In the treaty of December 1, 1774, between Holland and Great
Britain it was understood that "Horses and other warlike instruments are
contraband of war." And Hall declares that horses are generally
considered contraband and are so mentioned in the treaties between
different States. He points out that the placing of an army on a war
footing often exhausts the whole horse reserve of a country and
subsequent losses must be supplied from abroad; the necessity for this
is in proportion to the magnitude of the armies. Every imported horse is
probably bought on account of the Government, and if it is not some
other horse is at least set free for belligerent use. "Under the mere
light of common sense," he says, "the possibility of looking upon horses
as contraband seems hardly open to argument."[53]

[Footnote 52: Article XXIV; Wharton, Digest of Int. Law (1886), Vol.
III, §372.]