142 NORMAL HISTOLOGY. 



THE EAR. 



The specialized nemo-epithelium of the ear is found in the in- 

 ternal ear. It comprises two kinds of cells the sustentacular cells 

 and the hair cells. 



THE NOSE. 



The neuro-epithelium of the nose consists of elongated cells with 

 spherical nuclei. 



Laboratory exercise No. 46. The eye. Fix in chromic acid, harden 

 in alcohol, and stain with carmine, method No. 3. Make a study of the 

 structures above enumerated, and as far as possible demonstrate the 

 layers of each coat. What is the character of the crystalline lens? 

 The vitreous humor is the same in character as the jelly of Wharton 

 i. e., mucous tissue. 



MEMORANDA. 



