Fig. 1. 
EXPLANATION OF THE PLATES. 
SCHLEIDEN’S TREATISE. 
PLATE I. 
Cellular tissue from the embryo-sac of Chamedorea 
Schiedeana in the act of formation. a. The inner- 
most mass, consisting of gum with intermingled 
mucous granules and cytoblasts. 6. Newly formed 
cells, still soluble in distilled water. c-e. Further 
development of the cells, which, with the exception 
of the cytoblasts, may still coalesce, under slight 
pressure, into an amorphous mass. 
. The formative substance from fig. |, a, more highly 
magnified, gum, mucous granules, nuclei of the 
cytoblasts, and cytoblasts. 
. A single and as yet free cytoblast, still more highly 
magnified. 
. A cytoblast with the cell forming upon it. 
. The same, more highly magnified. 
. The same. The cytoblast here exhibits two nuclei, 
and is delineated in 
isolated after the destruction of the cell by pressure. 
. The same cellular tissue in a higher degree of deve- 
lopment than that represented by fig. 1, e. The 
contiguous cell-walls have already united. By 
making a transverse section, it may be distinctly 
perceived that the cytoblast is enclosed in the cell- 
wall. 
. Cells from a delicate transverse section of the almost 
matured albumen. 
