. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. A Mother Cell from the Cock, u-ith Spermatozoa free in its interior. having changed its shape in any remarkable way previously. The spermatozoa common to each cyst, however, remain together for a time, being connected by means of the tough albuminous contents of the mother cell. Thus, at least, we feel inclined to explain the occurrence of irregular groups of sperma- tozoa, which, kept together by one common cement, not unfrequently occur in the semen of the cock. According to our observation, the develope- nient of the
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. A Mother Cell from the Cock, u-ith Spermatozoa free in its interior. having changed its shape in any remarkable way previously. The spermatozoa common to each cyst, however, remain together for a time, being connected by means of the tough albuminous contents of the mother cell. Thus, at least, we feel inclined to explain the occurrence of irregular groups of sperma- tozoa, which, kept together by one common cement, not unfrequently occur in the semen of the cock. According to our observation, the develope- nient of the spermatozoa of the woodpecker and of the pigeon takes place in precisely the same manner; and this may be said likewise of singing birds.* The cells of developement of the latter are however still more rarely to be met with free, and are perhaps always en- closed by mother cells. The number of the enclosed cells is generally very considerable (fig. 333.). Fig. Cyst of the House Sparrow, u-ith enclosed Cells of of Developement. The formation of the spermatozoa in the interior of the individual vesicles of develope- ment is likewise very difficult to be traced, principally because the contents of the latter coagulate very readily, thus covering the spermatozoa, and rendering them indistinct. We have, however, succeeded several times in observing the spermatozoa in the house sparrow in the interior of their cells of form- ation (Jig. 334.). It certainly requires some practice to discover the windings of the body between the granules of the contents, the * Vide R. "Wagner's figures in Miiller's Ar- chiv. 1836, S. 225., in Fragm. zur Physiol. tier Zeugung; in Lclirlmch dcr Pliysiolog. § 17. S. 25.; ; ;I!MI iii tin' Icon. Phys. tab. I. fig. 5. (copied in tlic article, ENTD/OA, Vol. II. p. 112.), wlilch 1in\vi'vi'i-, in consequence of our recent researches, require some Please note that these images are extracted from scanned page images that may have been
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