Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: June 1, 2025
The proportions of the skeleton, the distribution of hair and fat, the construction of organs of attack and defense, the color of the skin, the cyclic processes of preparation for impregnation, the oestrus or heat period in animals, the menstrual period in the human being, the psychic reactions to danger and combat have all been thus determined.
All we can suggest at present is that a certain periodic development takes place by heredity in presence of the hormones exuded by the fertilised ovum and the embryo developed from it. In the dog, however, the period of the oestrus cycle is about the as that of gestation namely, six months.
Be this as it may, it is certain that the maggot works its way into the muscular fibre of the back, and depends upon the animal's blood for the nourishment which it receives. The author has been informed, by persons in whom he ought to have confidence, that the free use of the card, during the above-named months, is a specific protection against the attacks of the oestrus bovis.
He would not write more verse, when the oestrus was not on him, but he must write. He took up all the dropped threads of past years, ambitious plans formed in the fulness of vigour, and laid aside, but not abandoned. He was the very opposite of Shelley, who could never look at a piece of his own composition a second time, but when he had thrown it off at a heat, rushed into something else.
The Chinese have observed that the last day of menstruation and the two following days corresponding to the period of oestrus constitute the most favorable time for fecundation, and Bossi, of Genoa, has found that the great majority of successes in both natural and artificial fecundation occur at this period.
Towards the spring the larvae of the oestrus, attaining a large size, produce so many perforations in the skins that they are good for nothing. The cicatrices only of these holes are to be seen in August but a fresh set of ova have in the meantime been deposited.*
To pass from those grim heroes of protestantism to the French philosophers of the last century is a wide leap in a hundred respects, yet they too were pricked by the oestrus of intellectual responsibility. Their doctrine was dismally insufficient, and sometimes, as the present writer has often pointed out, it was directly vicious.
It must, however, be borne in mind that the warbles are the larvæ of the oestrus bovis, which is said to be the most beautiful variety of gad-fly. This fly, judging from the objects of its attack, must be particularly choice in its selection of animals upon which to deposit its eggs, as it rarely chooses those poor in flesh, or in an unhealthy condition.
From this circumstance, probably, has arisen the opinion above-mentioned. These warbles or larvæ of the oestrus bovis so nearly resemble bots in the horse or larvæ oestrus equi that, were it not for their increased size, they might readily be mistaken the one for the other.
Among animals the rule is simple and uniform; as soon as the female is impregnated at the period of oestrus she absolutely rejects all advance of the male until, after birth and lactation are over, another period of oestrus occurs.
Word Of The Day
Others Looking