x ii CONTENTS. 



CHAPTER XVIII. 



PAGES 



THE ORGAN OF HEARING 377-401 



The external ear ; 



The tympanic membrane ; 



The middle ear ; 



The ear-ossicles ; 



The Eustachian tube ; 



The internal ear ; 



The saccule and the utricle ; 



The semicircular canals ; 



The cochlea ; 



The ductus cochlearis ; 



The scala vestibuli ; 



The scala tympani ; 



The ductus endolymphaticus ; 



The development of the ear. 



CHAPTER XIX. 



THE NASAL Mucous MEMBRANE 402-406 



The. respiratory region ; 

 The olfactory region ; 

 Development of the nasal fossae. 



APPENDIX. 



THE MOST USEFUL HISTOLOGICAL METHODS 407-429 



Fixation of the tissue ; 



Fixation reagents ; 



Preservation of the tissue ; 



Staining ; 



Staining solutions ; 



Embedding ; 



Interstitial embedding ; 



Paraffin method ; 



Cellcidin method ; 



Section-cutting ; 



Cutting ribbon-series ; 



Fixing sections to the slide ; 



Mounting sections ; 



Finishing, labelling, and storing slides ; 



Outline of standard method ; 



Weigert's staining method ; 



Golgi's silver method ; 



Golgi's gold method ; 



Silver staining ; 



Staining chromatin filaments ; 



Injecting capillary blood-vessels. 



INDEX 431 



