170 DEVELOPMENT OF THE OVULUM 
ment, otherwise as in the present instance, nothing but the 
situation will determine it, and that only when the nucleary 
membrane exists. 
The granules composing the young albumen are very irre- 
gular in form. 
The growth of the embryo is curious, it shews evidently 
that the first formed cell is not that which (as might perhaps 
be expected) is to form the embryo, this being a subsequent 
development. Hence, epigynesis must be accidental: the 
growth does not depend on that of one or two pre-existing 
bodies, but new ones are formed, excited by the stimulus 
produced by the boyaux ? 
CHENOPODIUM, —PLATE Lir. 
1. Alabastrum, sometime before dehiscence. 
2. Ovary, etc. of ditto laid open, to shew the site of the . 
ovulum. 
3. Ovule of ditto, at this period it certainly has two coats, 
of which the second projects beyond the outer ; nu- 
cleus solid. 
4. Ovule more advanced ; secundine barely, if at all, dis- 
tinguishable. 
5. Young fruit enveloped in the persistent Sues" ca- 
lyx: 6. pistillum of ditto surrounded at the base by 
the persistent elongated filaments: 7. seed of ditto: 
8. ditto long section; a. testa; b. nucleary mem- 
brane; c. embryonary sac; d.* embryo: 9. nucleus 
— a. nucleus; 6. embryonary sac; c. em- 
bryo. 
9 a. Seed more advanced; the same letters* have the 
same references. : 
10. Nearly mature utricle: 11. long section of seed; 
the same letters have the same references. 
12. Flower laid open: 13. pistillum laid open, shewing the 
direction of the foramen at a; a. boyaux enter it. 
* Letters of reference omitted in original. 
