LABORATORY DIRECTIONS. 471 



3. Lung, including thick sections of injected organ. 

 Urinary Organs. 



1. Suprarenal bodies. 



2. Kidneys. Sections of injected kidney and 

 kidney pieces macerated with hydrochloric acid 

 (see page 457). 



3. Sections of ureters. 



4. Bladder, preferably sections of one distended 

 with fixing fluid. 



Reproductive Organs. 



1 . Sections of testes with epididymis attached. 



2. Vas deferens. 



3. Sections of penis, preferably of baby or a fetus. 



4. Prostate gland, preferably an old one. 



5. Ovaries. Old enough to show corpora lutea. 



6. Fallopian tubes. Sections of fundus and isth- 

 mus. 



7. Uterus. 



8. Placenta, preferably at half term. 



9. Mammary gland. 



The Skin and Appendages. 



1 . Sections of palm surface of finger. 



2. Sections of the scalp, tangential and cross. 



3. Nails. Sections of finger of fetus are very 

 good. 



Peripheral Nerve Endings and Spinal Cord. 



1. Sections of duck's bill. Iron hematoxylin 

 stain. 



2. Pacinian corpuscles may be found in sections 

 of the skin of the finger or in the connective tissue 

 of sections of the pancreas. They may be teased 

 out from the mesentery. 



