166 
DEVELOPMENT OF THE OVULUM 
8a. Same; apex of nucleus = triplet. 
8 b. Same, apex of nucleus under slight pressure. 
9. Same under pressure ;;. ? Tube seen to penetrate 
9 a. Same, ~. à E some distance in. 
10. Ovule, long section more advanced, coma well ‘de- 
ll 
veloped, except about the foramen 
10 a, Inner tegument of ditto detabhéd foramen not vi- 
* sible. 
10 b. Ditto long section; 10 c. nucleus of ditto expos- 
ed, sum ofi inner coat — ‘a. tegmen; b. nu- 
cleu 
10 d. Nidai of ditto long section ; a.* nucleary mem- 
brane to which the nucleus is now reduced; b.* 
embryonary sac collapsed in its natural state ; it is 
filled with fluid and very lax tissue ; 10 e. embryo 
: of the same. 
11. Embryo at the commencement of the cotyledonary 
division. 
12, Ovule much more advanced ; a. testa; b. tegmen ; c. 
nucleus ; d. embryonary sac, in its upper part cellu- 
lar, empty below; e. embryo already lateral, ovary 
10 lines long. : 
12 a. Embryo of same, adliesion of tegmen to nucleus 
slight, as of embryonary sae to nucleary. 
18. Ovules half matured, the same letters have the same 
references ; 13 a. embryonary sac detached, shewing 
the situation of the embryo ; this face corresponds to 
the antiraphal face of the ovule ; 13 5. embryonary 
sac viewed laterally ; 13 c. same interiorly, funicle 
easily ruptured from its attachment; nucleary mem- 
brane adhering slightly to the tegmen. 
Prate rt.—F'c. 2. 
i. Ovulum developed in the axis of the ovary, and out- 
side its cavity, a. apex of second coat projecting. ` 
* Reference omitted in original drawing. 
