MAMM.4LIAN ALVEOLINGUAL SALIVARY AREA 355 



His, W. 1885. Anatomie menschlicher Embryonen. Th. 3. Leipzig. 



Illing, G. 1Q04. \'ergleichende Makroskopische und Mikroskopische Unter- 



suchungen iiber die Submaxillaren Spcicheldriisen der Haussaugetiere. 



Aiiatomischc Hcjte, 26 Band, Heft |. 

 KoixiKER, A. 1884. GrundrLss der Entwickelungsgeschichte des Menschen und 



der Hoheren Tiere. Leipzig. 

 Meckel, J. F. 1829. System der vergleichenden Anatomie. Halle. 

 Owen, R. 1S6S. The .\natomy of Vertebrates. London. 

 RANvaER, L. 1886. Etude anatomique des glandes connues sous le nom de sous- 



maxillaire et souslinguales chez las mammiferes. Arch, de Phys. Norm, et Path. 

 Reichel, p. 1883. Beitrag zur Morphologie der Mundhohlendriisen der Wir- 



belthiere. Morpli. Ja/irhucli. Vol. 8. 

 ZuMSTEiN, J. J. iSqi. Ucber die Unterkieferdriisen Sauger. Marburg. 

 Loewenthal, N. igi2. Ueber die Stellung der sogennanten 01. retrolingualis 



nach entwicklungsgeschichtlichen Befunden. Anat. AHzeiger,Bd. ^2. No. 16.* 



ANNOTATION OF LEADERS IN ALL FIGURES 



1. Alveolingual region. 4. Lingual sulcus. 



2. Circumlingual space. 5. Alveolar sulcus. 



J. Marginal cavity. 6. Submaxillary flange. 



7. Submaxillary proliferation, keel or duct. 



8. Postglandular flange. 



p. Flange common to submaxillary and sublingual major. 

 70. Intermediate element. 11. Sublingualis major. 



12. Supralingual sulcus. A furrow present in embryos of 17 millimeters and 

 over, parallel and dorsal to the lingual sulcus, at first caudal to the 

 lingual nerve, later extending craniad. 

 I J. Juxta-alveolar sulcus. A furrow present in embryos of 17-ig miUimeters, 

 paraUel and lateral to the alveolar sulcus and situated caudal to the 

 lingual nerve. 

 14. Lingual nerve. //. Meckel's cartilage. 



75. Submaxillary ganglion. iS. Palate process. 



16. Hypoglossal nerve. ig. Tongue. 



* It is a matter of regret that, as the text of the papers here published was completed 

 in February igi2, we were unable to make use of Loewenthal's findings, and discuss his 

 conclusions in the body of this work. He holds the 01. retrolingualis (greater sublingual 

 gland) to be a second or accessory submaxillary, on account of the resemblance of their 

 development, and the position and time of appearance of their aniages. In that he thus 

 sharply distinguishes between the greater sublingual and the Ri\'inian series, we are in 

 fall agreement, but are not able to go so far in the other direction as to view the gland in 

 question as a submaxillary derivative. We have not felt the necessity of recognizing 

 in this region but two glandular entities, the submaxillary and the lesser sublingual series, 

 to one or other of which the greater sublingual (retrolingual) must be assigned. Our 

 reasons for interpreting it as an independent coordinate entity have been given at length 

 in the preceding papers. 



