The diseases and disorders of The diseases and disorders of the ox, with some account of the diseases of the sheep diseasesdisorderox00gres Year: 1889 448 THE DISEASES AND DISORDERS OF THE OX. season. A small amount of spirits of tar may be added to the oil and sulphur. We now pass on to the louse of the sheep, the creature which is depicted in the figure which next meets the reader's eye. The head of this creature is nearly orbicular, and the third joint of the antennae is the longest and clavate. The scientific name of the creature is Trichodectes sphmrocephalus. The ticks, keds, or fags f
The diseases and disorders of The diseases and disorders of the ox, with some account of the diseases of the sheep diseasesdisorderox00gres Year: 1889 448 THE DISEASES AND DISORDERS OF THE OX. season. A small amount of spirits of tar may be added to the oil and sulphur. We now pass on to the louse of the sheep, the creature which is depicted in the figure which next meets the reader's eye. The head of this creature is nearly orbicular, and the third joint of the antennae is the longest and clavate. The scientific name of the creature is Trichodectes sphmrocephalus. The ticks, keds, or fags found on the skins of horses, cattle, sheep, and dogs are parasitic species of the genus Ixodes, and belong to the class of Arachnida, of which spiders are also members. The next creature we have to consider is the Melophayus Fig. 57.—The otimis, which attacks the sheep. It has no wings, and is dark red in colour, except that the belly is white. It is often called the sheep louse. According to Ray, it will live in a fleece for twelve months after removal from a sheep's body. These ticks are especially numerous on ewes in the spring, and when the ewes are shorn, the lambs are tormented by the ticks passing on to them from the ewes. Hence it is advisable to dip ewes before shearing them, in order that these parasites may thereby be killed. We now come to the consideration of verminous bronchitis of lambs, a malady more generally known under the name of liusk or boose, and one the outbreaks ol whicli are sometimes enormous in extent. Indeed, the disease is especially one of
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