— 121 — 



with bold longitudinal flutings. It presents to view a 

 transverse section partly defaced, but with the labyrinthic 

 structure just visible to the naked eye. I have not been 





Fig. 3. 



able to prepare a transparent section, but fig. 3. is the 

 transverse section (X 41 diameters) viewed by reflected 

 light. There seem to have been 19 inflections of the ex- 

 ternal cement. At the level of section these penetrate to 

 about one third of the diameter of the crown. In the un- 

 obliterated portion of the section thus exhibited there are 

 eleven inflections, two of which are diminutive, not pe- 

 netrating more than half the distance from the periphery 

 to the pulp cavity. They are straight for a short distance 



