68 Mr. Griffith on the Ovulum o/'Santalum album. 



Fig. 11. Represents the fecundated ovulum of an ovarium 3 lines long. A 

 portion of the nucleus remains, beyond which can be seen the ter- 

 mination of the inclosed part, or rather, the origin of the tube. The 

 attachment of this is visible by an expanded portion at a, and no 

 change is seen to have taken place from this part to the origin of 

 the tube. Two gruraous irregular masses are visible between the 

 apex of the ovulum and the attachment of the unchanged portion 

 of the tube. The still more enlarged exserted portion, and rathe, 

 more than the lower half of the tube, have become cellular, the cells 

 containing a good deal of grumous matter. The upper part of the 

 tube likewise appears cellular ; but this, I think, results from the ad- 



1 hesion of the cells of the surface of the placenta. On one side of the 



apex of the tube a protuberance is seen ; the only instance that has 

 hitherto occurred. 



To its apex a filament is seen adhering, and this part is of a yel- 

 lowish brown colour. The vesicle is not visible. Three small cel- 



'■ lular-looking bodies are seen within the apex. I should remark, that 



the edges of the upper finely-cellular portion of the tube appeared 



to be double. 



Tab. III. 



Fig. 12. Placenta of an ovarium upwards of 3 lines in length. It is at this 

 time of a decided brown tint, the green having disappeared. A 

 fecundated ovulum is visible in situ, of which almost the entire ori- 

 ginal membranous tube has become cellular. On the opposite side 

 of the placenta the apex of an unchanged tube is seen to project 

 upwards. 



Fig. 13. Placenta and fecundated ovulum of a fruit 2^ lines long in situ. The 

 placenta is pushed towards one side of the cell of the fruit, and is a 

 good deal compressed. It is attached chiefly by branched fibrous 

 tissue, which contains molecules. 



Fig. 14. Longitudinal section of an ovarium 3| lines long. No induration 

 has taken place in the pericarpial walls. The endocarp is white, 

 fleshy, of considerable thickness, and closely resembles albumen. 

 A brownish line is seen passing through the remaining base of 



