Descriptive and Illustrated Catalogue of the Physiological Series of Comparative Anatomy Contained in the Museum of the Royal College of Surgeons in London ..., Band 4

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R. Taylor, 1838
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Seite 81 - ... are hardly discernible in the winter ; but in the spring they are very large, varying in size in a manner similar to the testicle. It may, however, be alleged, that the change in these bags might naturally be supposed to take place even admitting them to be seminal reservoirs ; but what happens in the prostate gland, which has never been supposed to contain semen, will take off the force of this objection ; since in all animals which have such a gland, and which have their season for propagation,...
Seite 34 - The male bee is considerably larger than the labourers : he is even larger than the queen, although not so long when she is in her full state with eggs : he is considerably thicker than either, but not longer in the same proportion : he...
Seite 10 - Lam., with the anterior parietes of one ray and the posterior parietes of another ray, dissected off, showing "the ovaria with the ova at the commencement of their development. The ovaria are two in number in each ray, as in the preceding species, and are similarly attached on each side of the base of the ray, where they may be distinguished from the digestive and locomotive caeca by their greater opacity and granular structure.
Seite 115 - In dissecting the female parts, in the silk-moth, says Mr. Hunter, I discovered a bag, lying on what may be called the vagina or common oviduct, whose mouth or opening was external, but it had a canal of communication betwixt it and the common oviduct. In dissecting these parts, before copulation, I found this bag empty ; and when I dissected them afterwards, I found it full.
Seite 124 - No. 991. middle line of the body, and have their free margins unprotected by a membrane; but the two smaller symmetrical groups have these margins covered by a thin membrane, which is reflected over them from the anterior margin of the glandular body; this is analogous to the detached laminated glands observable in the succeeding preparations (Cat., vol. iv...
Seite 34 - ... than that of the labouring bee, which makes me suspect he does not collect his own honey, but takes that which is brought home by the others ; especially as we never find the males abroad on flowers, &c. only flying about the hives in hot weather, as if taking an airing ; and when we find that the male of the humble bee, which collects its own food, has as long a proboscis, or tongue, as the female, I think it is, from all these facts, reasonable to suppose, that the male of the common bee feeds...
Seite 56 - ... anterior to the kidneys, the right about an inch in advance of the left, corresponding to the difference in the relative position of the kidneys : the intromittent organs, which consist almost wholly of a preputium, or invertible sheath, and a small glans, are retracted within their subcaudal cells ; bristles are inserted into the outlets of these receptacles, and pass into the cavities of the inverted preputia. The muscles which retract the penes and invert the sheaths, are exposed, as they...
Seite 140 - The oviducts are external to the ovaria, and are attached to the sides of the spine, each by a broad duplicature of peritoneum : they commence anteriorly by a simple, elongated, slit-like aperture, without fimbriated margins, and are immediately disposed in about twenty parallel transverse folds, which gradually diminish, and finally cease about three inches from the cloaca, where the oviducts open behind the rectum upon small prominences : bristles are placed in these outlets. The contracted allantoi'd...
Seite 37 - It is to be supposed they are the only bees which construct the whole hive, and that the queen has no other business but to lay the eggs : they are the only bees that bring in materials ; the only ones we observe busy abroad ; and, indeed, the idea of any other is ridiculous, when we consider the disproportion in numbers, as well as the employment of the others, while the working bee has nothing to take off its attention to the business of the family. They are smaller than either the queen or the...
Seite 150 - B, of the same series, shows the female organs and cloaca in a state ready for impregnation. The left ovarium is crowded with numerous ovisacs in various stages of development ; two of which are conspicuously larger than the rest, and project in a greater part of their circumference from the surface of the ovary. One of these ovisacs (Graafian vesicles) has been laid open and the ovulum with the surrounding granular layer and fluid removed ; the other remains entire. The peritoneal capsule of the...

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