280 PRACTICAL HISTOLOGY [XXXV 



The surface cells, and most of the gland cells are 

 ciliated, but possibly the cilia will not be seen, as they 

 readily disintegrate. 



5. Transverse section of Fallopian tube. Note the outer 

 longitudinal and the inner circular muscular coat ; the much 

 folded sub-mucous and mucous membrane with glands, the 

 surface ciliated epithelium. 



6. Mammary Glands. Section of a portion of 

 mammary gland (adult but not old, non-pregnant cat 

 or rabbit ; Flemming's fluid, cut frozen) ; stain with 

 picrocarmine. 



Observe the groups of lobules forming alveoli ; the 

 commonly large lumina of the alveoli, and their frequent 

 connection with one another. 



Under a high power, note the epithelium, flattened, 

 cubical, or columnar in different alveoli ; the cells 

 commonly contain fat globules, and some have more 

 than one nucleus. Where the contents of the alveoli 

 have not tumbled out, note that they form a granular 

 mass crowded with fat globules. 



7. Section of mammary gland (alcohol, stained in 

 bulk, cut in paraffin). Compare with 6 ; the fat will 

 have been dissolved out, the alveolar contents will be 

 granular. 



8. Testis. Transverse section of testis, and head 

 of epididymis of cat or dog (Muller's fluid or alcohol) ; 

 stain with picrocarmine (or better with Ehrlich-Biondi 

 fluid). 



a. Observe under a low power 



The tunica vaginalis, a thin membrane covering 



