. A text-book on physiology : for the use of schools and colleges : being an abridgment of the author's larger work on human physiology. h the structure and pri-mary function may be the same. 4th. The secretion of Peyers glands. These may bedescribed as circular spots, of a whitish color, and aboutthe tenth of an inch in diameter, constituting glandularpatches full of cell germs, but without any excretoryduct opening into the intestine. It is supposed thatthey discharge their contents by rupturing at a cer-tain stage of their development. The solitary and ag-minate glands appear to belong to t
. A text-book on physiology : for the use of schools and colleges : being an abridgment of the author's larger work on human physiology. h the structure and pri-mary function may be the same. 4th. The secretion of Peyers glands. These may bedescribed as circular spots, of a whitish color, and aboutthe tenth of an inch in diameter, constituting glandularpatches full of cell germs, but without any excretoryduct opening into the intestine. It is supposed thatthey discharge their contents by rupturing at a cer-tain stage of their development. The solitary and ag-minate glands appear to belong to the same physiolog-ical group. The two conditions of Fi9- ^- the Peyerian glands are g S» shown in Fig. 17, the \\ . J right one being empty,its contents having beendischarged, the left onestill full. By some it isdenied that these bodiesare connected with intes-tinal digestion. The factsthat vascular loops passinto their granular contents, and that the lacteals bear adefinite relation to them, seem to indicate that they arerather portions of the absorbent mechanism. Describe Peyers glands. To what system do they probably be-long?. Peyerian glands. 56 THE BILE.—DIGESTION OF STAECH. 5th. The bile. Of this it is not now necessary togive a detailed description, since that will occur moreappropriately in treating of the functions of the the present purpose, it is sufficient to state that bileis -a greenish-yellow liquid, of bitter taste and alkalinereaction. It does not appear to exert any agency in effectingthe digestion of either nitrogenized or amylaceous bod-ies. The period of its maximum production, which is13 or 14 hours after a meal, does not coincide with theperiod of most energetic digestion. With these statements of the nature of the variousjuices passing into the small intestine, we may proceedto investigate the phenomena of the digestion carriedon in that tube. Of respiratory elements, starch is one of the most im-portant, occurring as it does in abundance i
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