306 THE ALIMENTAEY TRACT, ETC. 



and these cells are usually thicker than the surrounding non-ciliated 

 cells. Such cells are found especially near the openings of the ovi- 

 ducts and on the liver. The dimensions of the cells vary ; according 

 to Neumann the average dimensions of ciliated cells on the liver are : 

 o-oo6 mm. depth (without the cilia); nucleus, 0-012 mm. long and 

 0"003 mm. broad. The cells are five- or six-sided and bounded by 

 straight sides (Neumann).] 



