248 S. SAGUCHI 



the ciliated and non-ciliated cell, and as being on the road partly 

 to the development, partly to the metamorphosis, of the ciliated 

 cell. 



3. The pharnyx of Amphibia. Here some ciliated epithelial 

 cells transform themselves into goblet cells; first, the cilia dis- 

 appear and then the upper portion of the cell becomes narrower, 

 in consequence of the pressure of neighboring cells, which may 

 cause a bulging of the cuticular border (fig. 53) ; on the surface 

 of the latter there can often be seen degenerated remains of the 

 cilia. As the process proceeds, the lower half of the cell en- 

 larges, and elongates downwards; the chondi'ioncotes gather 

 into a conical heap, above the nucleus, secretion granules first 

 being formed at the top of the cone. Such cases as this are, 

 however, not frequently seen; most of the goblet cells, rather, 

 seem to be formed by the proliferation of basal cells. 



Lenhossek ('98) and Tschassownikow ('13) report that ciliated 

 cells in the pharnyx of Amphibia transform into goblet cells, 

 and, that the cells may retain their cilia for a long time in spite 

 of the accumulation of mucous droplets. Though I studied this 

 point in considerable detail, I have not been able to confirm the 

 latter opinion of these authors. I have frequently found some 

 features which looked as if they might be due to the accumula- 

 tion of mucous droplets in the upper portion of the ciliated cell, 

 but, on closer inspection with higher power it became at once 

 apparent that it was an appearance produced by the superposi- 

 tion of a tangential section of a goblet cell upon a neighboring 

 ciliated cell, which may easily be understood when one recalls 

 that the bulging goblet cell undermines neighboring cihated cells. 



4. The oviduct of Amphibia. The oviducal epithelium is com- 

 posed of ciliated and glandular cells. The former become con- 

 verted into the latter by the accumulation of secreted material; 

 they retain their cilia for some time (fig. 65, a and b) before the 

 discharge of the contents sets in, as stated by Lenhossek and 

 Tschassownikow. 



5. The oviduct of the lizard. The above statement for Am- 

 phibia holds good for this form (fig. 78). 



