Davenport. — Budding in Brjozoa. 



PLATE II. 

 ABBREVIATIONS. 



All Figures from preparations of Paludicella Ehrenbergii. 



Fig. 10. Surface view of cuticula near the end of a brancli at intervals, a being 

 nearest the tip, and d farthest from it. Tlie branch was stained in 

 Erlich's hasniatoxylin, tlie color being taken up by superficial cuticula 

 only. X 320. 



Figs. 11, 12, 13. Cross sections of the cuticula taken at different distances from 

 the tip, to show the stainable and non-stainable cuticulae. Figure 11 

 is from near the tip. Figure 13 farthest from it. X 1000. 



Fig. 14. Longitudinal median (sagittal) section through the tip of a branch show- 

 ing cells of tip and an early stage in the development of the polypide. 

 X 410. 

 Cross section of branch showing origin of lateral bud. X 635. 

 Longitudinal section of body wall of branch through the point at which 

 a lateral bud is originating. Polypide of ancestral branch is nearly 

 adult. X 635. 

 Longitudinal section of body wall from near the tip through the Anlage 



of a lateral bud. X 410. 

 Cross section of branch showing histological conditions of Anlage of 

 lateral bud. The polypide has reached a stage of development cor- 

 responding to that of Figure 36, Plate IV. X 1000. 



Fig. 19. Longitudinal section through body wall from the same branch as Figure 

 17, but farther from the tip. Histological conditions are to be com- 

 pared with those of Figure 17, which represents a less differentiated 

 condition. X 410. 



Fig. 20. Cross section of branch in which the polj'pide has reached a stage slightly 

 younger than that of Figure 36. To show Anlage of two lateral buds 

 with their cuboidal undifferentiated cells. X 410. 



