14i GASTEIC GLANDS OF TITK MAESUPIALTA. 



Fig. 2. Vertical section through the gastric gland of Fhascolarctus parallel to 



long axis of the stomach but passing to one side of the oesophagus. 



X 8 diameters. 

 Pig. 3. Portions of three contiguous tubules of the gastric gland in Phascolomys 



from its pyloric extremity. Vertical section, parallel to longitudinal 



axis of stomach. X 20 diameters. 

 Fig. 4. Three contiguous tubules of the gastric gland of Phascolarotus. Vertical 



section, parallel to longitudinal axis of stomach. X 30 diameters. 

 Pig. 5. Transverse section of a primary gland-tubule from the gastric gland of 



Phascolomys. X 694 diameters. 

 Fig. 6. A primary tubule from the gastric gland of Phascolarotus, seen in optical 



section. X 266 diameters. 



Eeference Letters. 



bv. Blood-vessels. 



en. Neck-cell in primary gland tubule. 

 cp. Parietal cell. 

 cc. Central cell. 



ct. Connective tissue between primary gland tubules. 

 Ip. Lumen of primary gland tubule. 

 Is. Lumen of gastric-gland tubule. 

 miisc.l. Longitudinal layer of muscularis. 

 musc.t. Transverse layer of muscularis. 



m.int. Nonstriated muscle fibre between gastric-gland tubules. 

 mp. Nonstriated muscle fibres. 

 mst. Striated muscle fibres. 

 mm. Muscularis mucosae. 

 m.cB. CEsophageal musculature. 

 m.py. Pyloric sphincter. 

 muc. Mucosa. 

 muc.p. Pyloric mucosa. 



0, Opening of the gastric-gland evagiiiations into the stomach. 

 ser. Serosa. 

 sm. Submucosa. 

 C. Cardiac extremity of gastric gland. 

 P. Pyloric extremity of gastric gland. 



