IN CALOTROPIS PROCERA, 43 
Directly the membrane is torn across even water causes 
the opacity to be evident. 
In the petals, there are two strata of tissue, but no decided 
cutis; the outer is most cavernous, corresponding to the 
under side of the leaf: hence Schleiden’s idea is worth fol- 
lowing up; the inner however is irregularly cavernous like 
the other stratum, but not to an extent in proportion to their 
respective thickness. 
Oil renders it very transparent, it then appears like a cel- 
lular mass, with a continuously uniform edge; it developes 
a slight grumous appearance through the membranous to the 
cellular part, then the cells near the bulbous part get more 
and more opaque. The membrane is evidently thicker in the 
neck on both sides than elsewhere. 
The under face of the mature stigma presents very mark- 
ed appearances, the styles above the articulation have a 
spongy cellular look ; while as it expands into the disc, it 
assumes a pink colour. 
The disc itself is pink and striated, except the concave 
faces between the angles, which correspond with the finer 
faces of the anthers: the line of demarcation between these 
is semi-circular, and has a somewhat ragged look ; the con- 
cave spaces are green, and have not so stigmatic an appear- 
ance even as their upper margin ; the ends of the angles are 
slightly fuscescent. 
The stigmatic surface is still visible on a transverse section, 
although obscured by opaque grume, and mucilaginous 
looking cellular bodies. [In the development of this plant 
the first anomaly that occurs is the consolidation of the 
two apices of the pistillum into an imperforate disc. "This is 
followed by the articulation of this disc on the style, although 
it may appear foreign to sound philosophy to attribute all 
the subsequent peculiar organizations to this, as a direct 
cause. Yetit certainly may be made to afford a satisfactory 
explanation of the phenomena as they exist.*] 
* Evidently intended by the author to be superseded by what immediately 
follows. 
* 
