AUTHORS AUSTHACT Or THIS PAPKH ISSUED 

 HY THE HIIII.UKiHAPIIIC SEUVICE C CTODEH 27. 



THE DEVELOPMENT OF THE SEROUS GLANDS (VON 

 EBNER'S) OF THE VALLATE PAPILLAE IN MAN^ 



E. A. BAUMGARTNER 



Dcparhncul of Annlomjj, Washington, Unircrsiti/ Medical School, Sf. Louis 



ONE TEXT FIGURE AND THREE PLATES (tEN FIGURES) 



INTRODUCTION 



111 1873 von Ebiier described the acinal glands in the base of 

 the tongue. Since then contributions to our knowledge of these 

 glands have been mainly of a topographical or comparative 

 nature. Surprisingly little work has been done on the develop- 

 ment of the lingual glands. Graberg's ('98) figures of sections 

 showing the early origin of the serous glands of the vallate 

 papillae in man form the basis of the description of the develop- 

 ment of the serous glands in Keibel and Mall's Embryology. He 

 figured them as early lateral outgrowths from the epithelial 

 walls of the papillae which in later development branch consider- 

 ably but are not fully developed in a 56 cm. child. This work, 

 together with Oppel's ('99) excellent figure of the topography 

 of the lingual glands in various mammals, is particularly en- 

 lightening. Oppel's study of the arrangement of the lingual 

 glands in man is based upon a single specimen. Maziarski ('01) 

 gives a brief illustrated descrii^tion of a model of a small portion 

 of the glands of a child of fourteen years. 



Since there has been so little work done on the development 

 of these glands and on their adult condition, an intensive study 

 of the glands in various stages of development as well as a fur- 

 ther iiKiuiry into their topographical distribution in late fetuses 

 and the newborn, may be of interest. The to]3ographical dis- 

 tribution in the newborn, the arrangement of ducts and gland 



1 I wish to thank Prof. J. Playfair McMurricli for the privileges of his hib- 

 oratory during a part of tlie time while this study was in progress. 



365 



