1282 General Notes. [ December, : 
suspect this the more from having the past winter raised some 
seedling apple trees in a flower pot in the house, and from my 
utter failure to produce even spermogonia on these seedlings, 
although at the proper time last spring I placed fresh spores of 
Gymnosporangium on their leaves. In order to test this matter 
more fully I have saved seeds from apples grown on the Baldwin, 
which, as stated, was badly affected with Reestelia, and from 
apples grown on a tree next to it which was unaffected with 
Reestelia, in order to ascertain, if possible, whether the seedlings 
from these two trees will show any difference in their susceptibil- 
ity to receive the inoculation of the Gymnosporangium spores.— 
J.B. Ellis, Newfield, N. J., Oct., 1883. 
THE STRUCTURE OF THE CELL-WALL IN THE COTYLEDONARY 
STARCH-CELLS OF THE Lima Bean.—Several years since, while 
studying in the microscopical laboratory of the University at 
Lewisburg, Pa., I undertook a thorough study of the seed of the ; 
Lima bean (Phaseolus lunatus). Among other things of interest 
I noticed a peculiarity in the structure of the walls of the cotyle- 
donary starch-cells such as I have never seen noted in any wor 
on structural botany, The following is an abstract from my 
notes : 
If the contents of the large cells (starch-cells of cotyledon), or 
any except the procambium and epidermal cells, be removed, 
end of the cell presents a very peculiar appearance (taken in very 
thin section from alcohol eighty per cent menstruum). : 
It seems to be perforated with holes (Fig. B), often so ee a 
ous and large as to give to the wall the appearance of nee 
or delicate net-work. The cause of this phenomenon for a long 
time eluded discovery. The transverse section 0 
Bi a rd 
f the cell-wall 
foration, and no very 
distinguished, is seen to vary very much in thickness at oe 
points, closely resembling a string of beads considerably sefy : 
rated from each other; also where the middle lamella 1S a por- : 
the outer lamellæ become thinner (Fig. C). Now the Bae : 
tion of the wall contains more moisture than the outer i@° a 
m them; ! 
ons of thic 
peculiar 
on of 
spaces which were quite large. woe 
The observations were made with a Beck’s “ Na Vs 
objective ; B eye-piece, with the tube of the micros! 
