ERIOCAULONE.E. 119 
tance between the septa. It is owing to the transverse dis- 
tention that the green globules lose their aggregate form, and 
become irregularly dispersed, they are universally present in 
the septa. i 
I have examined these septa in Alismacez.  Pontederiz, 
Cyperacez and Nelumbonez, in all of which their organisa- 
tion is precisely the same as that of Eriocaulez. In the Pon- 
tederize, raphides are attached in abundance to these septa, and 
at right angles. The raphides are enclosed in colourless 
cells, an organisation I have met with elsewhere,* these cells 
have from some cause or other stuck in the meats, so that 
either extremity of each raphidiferous cell, projects beyond 
both surfaces of the septa. It may be objected that, if such 
is their formation, lateral distention would cause their separa- 
tion along the points of junction, but their union however at 
these precise points, is so firm that the cells will generally tear 
` across, sooner than separate. If they are elefts, why is their 
margin double? a fact only to be explained by their being 
meats existing between entire cells. lf more proofs were 
wanting, dissection demonstrates the cells to be entire. 
Analogy is against the existence of clefts in cellular tissue, 
except perhaps in the tissue of some anthers, all exceptions are 
probaby capable of explanation, a marked appearance of pores 
occurs. In the cells of the under cutis of a species of ZEschy- 
nanthus, (which is very thick), meats exist in abundance be- 
tween the cells, which are multigibbous, and adhere strongly 
together by theirgibbosities. On separating them, circular 
spaces are left, very much resembling pores, which correspond 
to their points of attachment. On examining them minutely, 
the membrane is found to be continuous, and frequently has 
granular bodies adhering to the circular spaces. I have sub- 
joined a figure of part of the tissue of this plant. 
* In Aroidex, raphides are likewise found in the ovula, a fact 
known to Mr. Brown. In the integument of the seed of Caryota 
urens, they occur in vast abundance, and are of very large size, | 
