﻿white] the seeds of aneimites 327 



cited figure vestiges of small scales or undeveloped ovules may be 

 noted. This feature, which is often to be observed, is also shown 

 more clearly in the isolated specimen drawn in figures 6 and 6a, plate 

 xlviii. Both of these seeds show indistinct traces of a very slight 

 collapse at the apex, a condition which may he construed as evidence 

 of a pollenic chamber. 



In the example just referred to a slight depression or dimple is 

 noticed in the lamina of the wing just at the lateral angle. This 

 character, which is visible in most of the seeds, I construe as possibly 

 indicative of the presence of glands at those points. Figure 5a 

 illustrates the vascular lineation of the outer envelope which is con- 

 tinuous from the portion over the nutlet across to the lateral dilation 

 which forms the wing. The outline of the nutlet is rarely revealed 

 by the tearing away of the marginal portion, but is frequently well 

 shown, especially in the lower portions, by the circumstances of 

 preservation, as illustrated by two proximate, mature, and detached 

 seeds shown on the rock in figures 7 and Ja, The outer envelope 

 is probably much thinner near the apex of the fruit, and in most 

 cases is hardly distinguishable as a border near the top. The point 

 of detachment, as shown in the figure last mentioned, is uniform in 

 practically all the numerous isolated mature fruits and is evidently 

 accomplished by the development of separative tissue at the base 

 of the mature seed. 



In a number of instances the arrangement of the fruits is more 

 crowded, the seeds being borne close above the dichotomy of the 

 pedicel, as suggested in figure 10; and this compactness sometimes 

 lends an aspect of several seeds at the apex of a single pedicel. 

 Fruits that are immature or about half-grown are seen in the frag- 

 ments, figures 8 and 9. In these specimens a number of the seeds 

 appear to be either imperfect or abortive. The aspect of the single 

 or double fruit accompanied by rudiments, or possibly undeveloped 

 ovules, at the apex of the pedicel is suggestive of the fruits of 

 Ginkgo. The marginal wing is quite inconspicuous at this stage of 

 the development of the seed. To the laxity and tenuity of the basal 

 portions of the pedicels, as seen in figure 9, is due the generally de- 

 tached and fragmentary condition of the specimens and the difficulty 

 of exposing them so as to show a direct connection with the foliate 

 portions of the pinna?. The example seen in figures 10 and 10a 

 is obliquely compressed so as to show the outer envelope completely 

 surrounding the nutlet. In another example, a fragment (figure 

 11) from the border of the foliate portion of the pinna, a pedicel is 

 developed at the apex of a small lateral pinna, the closely lineate sur- 



