54 DEVELOPMENT OF THE FLOWER 
they appear at first simple, but slight pressure shews that 
the upper edge is deeply grooved. "There is no distinction 
of teguments. 
Obs. [(Pl. 23. —D.) Alabastrum 23 lines, very globose, se- 
pals erect just equal to the corolla. Processes with the re- 
curved appendage for base, otherwise not much change ex- 
cept in size. 
Obs. Sac now separates easily, it is undoubtedly a firm and 
thick membrane, the edge is continuous, and the last part 
filled up is the inner edge in the neck. Except this part it 
looks like a flattened mass of crowded, large, and very mi- 
nute granules, presenting traces of cellularity. |* 
[In the earliest aggregation of the grumous contents, I 
have seen some appearances of its taking place in the upper 
or narrower part of the sac at least, in transverse oblique lines. 
The membrane is easily separable. from the mass, which 
presents a somewhat cellular appearance, from the inter- 
stices between the future pollen grains being transparent. 
The cell of the grains is scarcely tangible although it is traced 
out, and the whole mass is held together in a curious inap- 
preciable way; slight pressure is sufficient to cause the 
separation of the more distinct, but even in these the outline 
of the cell is more appreciable from the grumous and mole- 
cular matter, than from any distinct membrane. The original 
continuity of the future cell of the anther, is marked out by a 
grumous fuscous line.]t 
Obs. (PI. Thora ) The walls of the sac have now the same 
as they preserve subsequently- 
~ The contents ‘consist of a cohering elastic grumous mass, 
the circumference of which has most cohesion. 
I see nothing distinct like traces of membrane. 
The grumous mass makes its escape at this period very 
readily. 
The glands at this time are two linear we fuscous, in- 
ner $ darker, adhering firmly to either side of furrow. 
Head of the stigma quite solid. 

* The MS, m is faintly M in pencil. 
+ Written in = 
