The American journal of anatomy . udy including in the case of Procyon and Mephitisthe whole of the oesophagus and the adjacent portions of the pharynxand stomach, in Lutreola the oesophagus and stomach only, so that inthe latter animal the pharynx and transition region was not addition the oesophagi of the cat and dog were examined to con-firm the work of earlier observers. In these animals preparations 18 Kmil < roetsch. of the whole oesophagus were made according to the method outlinedin the introduction in order to determine positively the distributionof glands in them. In t
The American journal of anatomy . udy including in the case of Procyon and Mephitisthe whole of the oesophagus and the adjacent portions of the pharynxand stomach, in Lutreola the oesophagus and stomach only, so that inthe latter animal the pharynx and transition region was not addition the oesophagi of the cat and dog were examined to con-firm the work of earlier observers. In these animals preparations 18 Kmil < roetsch. of the whole oesophagus were made according to the method outlinedin the introduction in order to determine positively the distributionof glands in them. In the case of the cat three such preparationswere made, all of which demonstrated the complete absence of-lands Ik low the level of the cricoid cartilage. The oesophageal glands of the dog, like those of the opossum, arecomposed of two kinds of cells, mucous cells and serous this respect my observations confirm the statements of Klein (79),Eenaut (97) and Belm (07) and are opposed to those of Rubeli (90) Serous iU in ih. cells Fig. 7. Section of two tubules from oesophageal gland of the dog showingmucous cells and demilunes. )< 750. and llaane (05). The latter observer, it is true, does not specifi-cally state that demilunes are absent, but implies it in the statementthat he was unable to find intercellular secretion-capillaries. Thedemonstration of the demilunes in the oesophageal glands of the dogis no difficult matter if thin sections of well-fixed tissue are examined,and if an efficient differential staining method is employed, forthey occur in relatively large numbers in all the oesophageal glands,although less numerous than in the glands of the opossum and rac-coon (Procyon). For staining neutral saiiiwiolet-safranin is par- The Structure of the Mammalian (Esophagus. 19 ticularly valuable, the mucous cells staining red in this method,the demilunes violet. This method also shows well the intercellularsecretion capillaries, although the iron hematoxylin method
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1910
