Lectures on the comparative anatomy and physiology of the invertebrate animals : delivered at the Royal College of Surgeons . They are each composed of a double series of transverse,parallel, close-set lamince, the straight margins of which are free andturned towards each other, along the middle line of the gland. Whenthis is laid open, an impacted layer of soft albuminous substance isfound occupying the interspace of the two sets of laminae; in which,in Rossia, it is moulded into a filamentary form, whence it escapes bythe anterior orifice, as at 230. Each supplementary body,2, i, is
Lectures on the comparative anatomy and physiology of the invertebrate animals : delivered at the Royal College of Surgeons . They are each composed of a double series of transverse,parallel, close-set lamince, the straight margins of which are free andturned towards each other, along the middle line of the gland. Whenthis is laid open, an impacted layer of soft albuminous substance isfound occupying the interspace of the two sets of laminae; in which,in Rossia, it is moulded into a filamentary form, whence it escapes bythe anterior orifice, as at 230. Each supplementary body,2, i, is indented by a deep groove close to the aperture of the nida-mental gland : it may assist in moulding the secretion, and applyingit to the ova as they pass out. The female organs of Spirula arelike those of Rossia; but I found the ova in the oviduct packed so asto lie, three or four, in the same transverse line. In the Argonautathe oviducts form several convolutions before they ascend to theirtermination in the branchial chamber, where, as in Octopus, thevulvae are wide apart: their lining membrane has an uniform thick. Rossia palpebrosa. CCLXXL, and Prep. No. 2962 A. 634 LECTURE XXIV. glandular character. In the Loligo sagittata the oviducts commenceabout one-third of the length of the ovary from its anterior end; andafter a short course are disposed in sixteen close, transverse folds,after which they are continued straight to their terminal glandulardivision. With respect to the act of impregnation in the Cephalopods, Ari-stotle, whose knowledge both zoological and zootomical of this classwas great, gives two accounts.* In the fifth book of the HistoriaAnimalium, he states that the Octopus, Sepia and Loligo copulatein the same manner; the male and female having their heads turnedtowards each other, and their cephalic arms being so co-adapted asto adhere by the mutual apposition of their suckers. In this act thePoulps {Octopus) are said to seek the bottom, while the Cuttles an
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Keywords: ., bookauthorowenrichard18041892, bookcentury1800, bookdecade1850
