374 E. A. BAUMGARTNER 



row. I have not "found glandular tissue within the connective 

 tissue of any papilla although von Ebner and others have noted 

 this. 



The ducts open into the bottom of the furrow or along the 

 lateral side of the epithehal wall, and occasionally into the 

 medial wall. No ducts are observed opening into the dorsum 

 of the papilla or into other grooves in the surface of the tongue 

 (except those belonging to the folliate papillae). Nor are any 

 ducts lined by ciliated epithelium as described by Schwalbe 

 ('68), von Ebner ('73) and'Gmellin ('92) found in my material. 

 Von Ebner stated that small alveoli either poorly developed or 

 not fully formed, and separated by considerable connective tissue 

 are not infrequently present. It is apparently such a group of 

 glands which Maziarski ('01) has reconstructed and figured. In 

 my material I have seen such a condition in only one group of 

 glands from a five year old child, and in this it is rather that 

 considerable connective tissue separated the more or less tubulo- 

 alveolar components of the glands than that the glands them- 

 selves are small. This group of glands approaches the alveolar 

 type more nearly than does the one figured by Maziarski and 

 as in his, no anastomoses are present. For the most part, 

 although the lobules may be closely crowded or scattered, the 

 individual end-pieces are usually very much crowded, and as a 

 result are often rounded or irregular in shape. This fact may 

 account for the occasional anastomosing of glands observed in 

 my material. It is possible that the anastomoses are not per- 

 manent and that anastomosing end pieces may separate in older 

 specimens. Absence of lumens in these anastomoses may indi- 

 cate beginning separation. However, as stated, the lumens are 

 often very minute and may appear discontinuously in other 

 places. 



Simple outgrowths from larger ducts are present in several 

 of the specimens studied (figs. 8 and 9). That these are gland 

 anlagen seems probable since various stages from the earliest 

 outpouchings to those showing beginning glandular division are 

 present. The serous glands therefore are not fully developed 



