. Dadd's theory and practice of veterinary medicine and surgery. Veterinary medicine. 172 DADD'S VETERINARY MEDICINE AND SURGERY. at length, these muscles appear to act involuntarily on the slightest touch of any body THE (ESTEUS EQUI. 1. The female fly, about to deposit an egg. 2. The male fly. 3. The egg; its natural size. 4. The egg magnified. 5. The newly-hatched bot. 6. The bot full-grown. 7. The head of a bot magnified. 8. The chrysalis. The inside of the knee is the part on which these flies are most fond of depositing their eggs, and next to this on the side and back part of
. Dadd's theory and practice of veterinary medicine and surgery. Veterinary medicine. 172 DADD'S VETERINARY MEDICINE AND SURGERY. at length, these muscles appear to act involuntarily on the slightest touch of any body THE (ESTEUS EQUI. 1. The female fly, about to deposit an egg. 2. The male fly. 3. The egg; its natural size. 4. The egg magnified. 5. The newly-hatched bot. 6. The bot full-grown. 7. The head of a bot magnified. 8. The chrysalis. The inside of the knee is the part on which these flies are most fond of depositing their eggs, and next to this on the side and back part of the shoulder, and less frequently on the extreme ends of the hairs of the mane. But it is a fact worthy of attention that the fly does not place them promiscuously about the body, but con- stantly on those parts which are most liable to be licked with the tongue, and the ova, therefore, are always scrupulously placed within its reach. The eggs thus deposited I at first supposed were loosened from the hairs by the moisture of the tongue, aided by its roughness, and were conveyed to the stomach, where they were hatched; but on more minute search, I do not find this to be the case, or, at least, only by accident; for when they have remained on the hairs four or five days, they become ripe, after which time the slightest application of warmth and moisture is sufficient to bring forth, in an instant, the latent larva?. At this time, if the tongue of the horse touches the egg, its operculium is thrown open, and a small active worm is produced, which readily adheres to the moist surface of the tongue, and is thence conveyed with the food to the stom-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Dadd, George H. , b. 1813. [from old catalog]. Cincinnati, R. W. Carroll & co.
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