156 



TYPES AND MARKET CLASSES OF LIVE STOCK 



fibrous capsules. The fibers of the two capsules intermingle 

 somewhat, and are prolonged upward to the median line of the 

 body to form a ligamentous support and partition, the two halves 

 thus being made distinct. The quarters on each side are not 

 so distinctly separated, there being no such well-developed par- 

 tition as between the halves, nor can the line of separation be 

 seen unless the tissues are stained. Dr. A. W. Bitting of the 

 Indiana Experiment Station injected different colored liquids 

 through the teats and found that the liquids did not leave the 



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Fig. 47. Cross-section of Cow's Udder. 



a, Body of gland; b, milk cistern; c, cavity of teat; d, duct of teat; e, inter- 

 mammary groove; f, septum between glands; g, supramammary fat. 



quarter, his investigation showing that a rather distinct trans- 

 verse partition exists. It follows that milk drawn from any 

 teat must be produced in its quarter, although there is slight 

 communication between the smaller ducts in the upper parts of 

 the two quarters on a side. Between the quarters of the same 

 half, the capsule sends off a rather incomplete transverse parti- 

 tion common to both, and there are numerous other reflections 



