. The diseases of poultry . Poultry; 1899. 146 DISEASES OF POULTRY. The egg advances into the more glandular and vas- cular part of the oviduct and here two other layers of albumen are secreted and deposited upon it. Each of these is thinner and more watery than the one which preceded. When the narrow part of the oviduct is reached, two denser layers of albumen are excreted forming the mcmbrana putaminis. Enclosed in this manner, having acquired its ovate form and with the. Fifj. 37.—Section of fowl's egrg'; <7, shell;/-, membra^a putaminis; r, r. layers of soft albumen; d^ chalazce; e^ cic
. The diseases of poultry . Poultry; 1899. 146 DISEASES OF POULTRY. The egg advances into the more glandular and vas- cular part of the oviduct and here two other layers of albumen are secreted and deposited upon it. Each of these is thinner and more watery than the one which preceded. When the narrow part of the oviduct is reached, two denser layers of albumen are excreted forming the mcmbrana putaminis. Enclosed in this manner, having acquired its ovate form and with the. Fifj. 37.—Section of fowl's egrg'; <7, shell;/-, membra^a putaminis; r, r. layers of soft albumen; d^ chalazce; e^ cicairicula and g-erminal vesicle;/, air chamber. The outline fitrure shows the yolU made up of layers de- posited successively, a, cicatricula, /', grerrainal vesicle. small end towards the cloaca, the egg enters the uter- ine or shell-forming dilatation. The inner surface of this portion of the oviduct secretes and deposits upon the membi'ana putaminis a thick white fluid which condenses, becomes calcareous and forms the shell. The time required for the egg to pass from the infundibulum to the uterus, in the common fowl, is said to be from four to six hours, and it may remain here from twelve to twenty hours. The color of the egg-shell depends upon pigmental matter secreted by particular follicles of the villous. 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 Salmon, D. E; Leeney, Harold. fmo; Cornell University. College of Veterinary Medicine. Flower-Sprecher Veterinary Library. fmo. Washington, D. C. : G. E. Howard & Co.
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Keywords: ., bookauthorco, bookcentury1800, bookdecade1890, booksubjectpoultry
