10 CONTENTS 



The Oviducts- 

 Mammals 221 



The Uterus 223 



The Vagina 225 



The Vestibule 226 



(Estius 226 



Menstruation 228 



Pregnancy 230 



Placenta 230 



Chorionic Villi 231 



CHAPTER XIV. 



The Male Reproductive System. 



Development of the Testes 234 



Spermatogenesis 236 



Sertoli Cells 236 



Spermatogenic Cells 237 



Interstitial Cells 239 



Sperm Ducts 239 



The Testes of Fishes 240 



The Testes of Amphibia 240 



The Testes of Reptiles 242 



The Testes of Mammals 242 



Tubuli Recti 245 



Rete Testes 245 



Vas Efferentia 245 



Epididymus 245 



Vas Deferens 245 



Seminal Vesicles 246 



The Prostate 247 



Cowper's Glands 248 



Copulatory Organs 248 



Lower Vertebrates 248 



Penis of Mammals 249 



CHAPTER XV. 



The Endocrine Glands. 



The Pituitary Glands 253 



The Thyroid Glands 255 



The Parathyroid Glands 258 



The Adrenal Glands 259 



Mammalian Adrenal 260 



The Cortex 260 



The Medulla 262 



The Carotid Glands 262 



Paraganglia 263 



The Pineal Body 263 



CHAPTER XVI. 



Technique. 



Fixation 265 



Fixing Reagents 265 



Acetic Acid 265 



Picric Acid 265 



Formalin 266 



Alcohol 266 



