340 ELEMENTARY PHYSIOLOGY. [XXXII. 



B. Uterus. 



1. Prepare transverse sections of the fundus of a 

 mammalian uterus which has been hardened in 

 the chromic acid and spirit mixture. The uterus 

 may have been either distended with the fluid, 

 or pinned out and placed in it. Observe 



a. The thin external fibrous coat. 



y8. The thin outer muscular coat of two layers, 

 an outer longitudinal and an inner circular. 

 Inside this and separated from it by a little 

 connective tissue is 



7. The thick inner muscular coat of two 

 layers, the outer longitudinal or oblique, the 

 inner circular. 



S. The mucous membrane, consisting of fine, 

 loose connective tissue into which run tubu- 

 lar glands from the surface; the glands are 

 lined by a single layer of columnar ciliated 

 cells. The surface of the mucous membrane 

 is covered by similar columnar ciliated cells 

 with some mucous cells. 



0. Testis. 



1. Take a small mammalian testis, e.g. of a guinea- 

 pig, which has been hardened in Muller's fluid, 

 and cut longitudinal sections through the testis 

 and head of the epididymis. Observe under 

 a low power 



a. The tunica vaginalis propria, which is 



