640 KNOWLTON: Fost FRuiTS AND 
preserved piece that was with equal certainty dicotyledonous. 
The accompanying figure (/. 7) shows it in longitudinal tangential 
section, and brings out the fact that it was provided with large 
dotted ducts and numerous medullary rays, the latter of about 
uniform size and two or rarely three layers of cells side. It sug- 
gests a wood allied to Betula, but of this I am uncertain. 
One of the most abundant and conspicuous of the fruits was 
named Carpolithes Brandonianus by Lesquereux. As may be seen 
from the figures 1, 2, it is a large flat fruit with the opening a little 
below the apex. It has been suggested that its affinity is possibly 
with the living /effersonia diphylla, the well-known twin-leaf. Un- 
fortunately most of the material at my disposal could not be used 
for sections, and I was obliged to confine my investigations to im- 
perfect specimens. A section through the basal portion showed 
the thick fruit to be made up of very thick-walled tissue in which 
the lumen was reduced to a mere point (f. 77, 72). It had been so 
distorted that its true relationship could not be made out, more 
especially as the sections could not be made in the same plane 
through the whole fruit. Its appearance is shown in the two 
figures. I was not at the time able to secure working material 0 
the capsule of /Jeffersonia, so I am unable to speak of the relation- 
ship beyond the superficial resemblance, which is really striking. 
Among the fruits sent me by Professor Seely and which were 
afterward sent to Lesquereux, was a single small nearly spherical 
fruit named Carya globulosa by Lesquereux himself. This was 
the first intimation of the existence of a species under this name, 
and for a time it proved a complete puzzle. Subsequently in look- 
ing over the collections belonging to the U. S. National Museum 
I found a small box containing fruit under this name, and in the 
catalogue the information that the species was unpublished. 
__ This fruit may be described as follows (f. 3-5): Specimens 
almost completely spheroidal in shape, being only very slightly 
compressed at the apex. Some of the fruits have retained what 
seems to have been a thin outer covering or exocarp which entirely 
enveloped them. Through this thin exocarp the wrinkling °F 
_ toughening of the true capsule is very plainly discernible, and in 
___ this condition they really very much resemble some living species 
s se uglans or ficoria, which are provided with an indehiscent exocarp- 
