250 



MR HAROLD AXEL HAIG ON 



Plate XXI. 



Anatomical features of some of the viscera. 

 Fig. 1. The stomach and intestines from the ventral aspect : — 



1. Coils of small intestine. 



2. Peritoneal fold attached to greater 



curvature of stomach. 



3. Pyloric end of stomach. 



4. Cardiac end of stomach. 



Fig. 2. A coronal section of the thyroid and lowest 

 th. Lobules of the lateral lobe. 

 p.th. Parathyroid, showing arrangement of cell 

 nective tissue. 

 v. Vein in capsule, with a small nerve-trunk. 



Fig. 3. The lungs from the ventral aspect : — 



a. Part of right middle lobe. 



b. Upper and lower lobes of left lung. 



c. Bronchi entering root of lung. 



Fig. 4. The retroperitoneal and pelvic viscera : — 



1. Cloacal aperture. 



2. Severed allantoic duct. 



3. Urinary bladder. 



4. Ureter (cut across). 



5. Genital duct. 



6. Left kidney. 



Fig. 5. The liver from dorsal aspect : — 

 r.l. Right lobe. 

 k. Surface of right lobe which lies over 

 kidney. 



Fig. 6. Deep surface of the spleen : — 



a. Elongated hilus with blood-vessels. 



5. CEsophagus. 



6. First bend of duodenum, 



7. Pancreas. 



8. Part of transverse colon. 



parathyroid : — 



-columns with intervening blood-channels and con- 



d. Pulmonary vein emerging from right lung. 



e. The three lobes of right lung. 



7. Adrenal gland. 



8. Diaphragmatic ligament of mesonephros. 



9. Genital gland. 



10. Rectum, with rudimentary uterus just ventral 

 to it. 



l.l. Left lobe 



l.v. Umbilical vein ( — ligamentum teres of later 

 stages.) 



b. and c. Dorsal and ventral margins. 



Plate XXII. 



Figures (semi-diagrammatic) illustrating the histological features of some of the viscera. 



Fig. 1. Portion of a longitudinal coronal section of a kidney showing a quadrant of one renal pyramid 

 and some intervening connective tissue : — 



a. Ampullae of terminal branches of 

 Wolffian diverticulum. 

 con.t. Convoluted tubule seen cut across 

 several times. 

 m.c. Malpighian capsules. 



Fig. 2. Part of a longitudinal coronal section of an adrenal body : — 



c. Capsule. s. Sympathetic ganglion cell masses 



w. Secondary, tertiary, etc., branches of Wolffian 

 diverticulum. 

 i. Intervening connective tissue between neigh- 

 bouring pyramids. 



z.g. Zona glomerulosa. 

 z.f. Zona fasciculata. 

 m. Medulla. 



b. Blood-channels in medulla between large 

 groups of sympathetic cell-masses. 



