2 g 6 Johnson . — On the Nursing of the Embyro. 
Fig. 14. Base of pi. t. of half-ripe seed, in carpellary vascular cup, c. v. b. 
x 1000. 
Fig. 14 b. General view of placenta of very young fruit. s. seed; d. 0. 
unfertilised ovules ; pi. t. as before, x 120. 
Fig. 15. Young seed in section, n. nucellus; rest as before, x 1000. 
Fig. 16. Placenta of ripe fruit. t. testa; f p. floor of ovary pouch; p. c. 
placental column ; rest as before, x 120. 
Fig. 17. Transverse section of young fruit. v. b. carpellary vascular bundle; 
si. slit in which seta is lodged ; st. stoma ; rest as before, x 120. 
Fig. 18. A portion of nearly ripe fruit in section. e. e. empty endosperm cells ; 
rest as before, x 480. 
Fig. 19. Transverse section of placental tract, pi., with embryo-sac prolonga- 
tion in section; c. c. crushed cells of pi. In Figs. 18 and 19 the wall of the 
embryo- sac is seen distinct, x 1000. 
Fig. 20. Mature embryo in longitudinal section. v. c. viscid cells ; c. cotyle- 
dons ; pr. procambial strand ; r. radicle (?) ; a. layer of empty cells, x 1 20. 
Fig. 21. Young embryo, undifferentiated, x 1000. 
Fig. 22. Ripening seed. endp. endosperm cells grown round the curve of the 
embryo-sac (//. t.) into its long arm. Other letters as before, x 480. 
