XXV.] 



SMALL INTESTINE. 



279 



ture). The surplus HgCl 2 is extracted with water at 30 and 

 afterwards with alcohol at 40 C. It is then removed from the 

 cork plate and hardened in alcohol. Embed and cut in paraffin. 

 Kuczynski 1 has investigated these glands in a great number of 



FlQ. 267. Awerbach's Plexus in Section, a. Ganglionic cells ; b. Nerve-fibres ; c. Circular, 

 ami (2. Longitudinal muscular fibres. 



animals and man, and tried a great variety of stains. Kleinenberg's 

 fluid is also very good as a fixing reagent. 



(L and H) Note villi, Lieberkiihn's glands and the usual intes- 

 tinal coats. In the submucous coat, which is thick, are the acini 



Fio. 268. Meissner's Plexus Intestine (Rabbit). Lemon-juice and pold chloride. 



of Brunner's glands (fig. 269), each composed of a basement mem- 

 brane lined by cubical or short columnar cells. A duct from each 



1 Internat. Monats. f. Anat. u. Phys., vii., 1890, 419. 



