MR. JOHN MIERS ON THE LOASACEA. 237 
Fig. 18. A seed of Bartonia sinuata, Presl, of the natural size. 
Fig. 19. The same, magnified ; 
Fig. 20. The same, seen edgeways ; 
fig. 21. The outer integumental sac, cut open, with the nucleus removed ; 
Fig. 22. The nucleus, consisting of an inner integument covering the albumen ; 
Fig. 23. The same, seen edgeways ; | 
Fig. 24. The inner integument removed and cut open ; 
fig. 25. The albumen containing the embryo ; 
Fig. 26. The embryo extracted. All magnified on the same scale. 
Fig. 27. A seed of Blumenbachia insignis, Schrad., of the natural size. 
Fig. 28. The same, magnified ; 
Fig. 29. The outer integument cut open and removed ; 
Fig. 30. The intermediate integument ; 
Fig. 31. The inner integument enclosing the albumen ; 
fig. 32. A longitudinal section of the albumen, with the embryo imbedded in it; 
Fig. 33. The embryo extracted. All magnified on the same scale. 
Fig. 34. A seed of Caiophora absinthrifolia, Presl, of the natural size. 
Fig. 35, The same, magnified ; 
Fig. 36. A transverse section of the same, showing the position of its wings ; 
Fig. 37. A longitudinal section of the same, showing the size and marking of two of the wings, the 
apical strophiole, and the enclosed nucleus suspended from it. All magnified on the same 
scale. 
Fig. 38, A portion of one of the wings, showing the rectangular areoles filled with a delicate reticulated 
z membrane more highly magnified ; 
E 39. The inner integument covering the albumen ; 
5 40. A longitudinal section of the albumen, in which the embryo is imbedded ; 
41. The embryo extracted. All (except fig. 38) magnified on the same scale. 
Fig. 42, À seed of Raphisanthe Ochagavie, nob., of the natural size. 
43. The same, magnified, d 
^. A longitudinal section of the same, showing the nucleus suspended from the ims, within the 
much larger space of the thick outer integument, and therefore free from it at the base: also 
Magnified. . a 
The albumen invested by the inner integument, showing the black apical point from which it 
Rs. 
is Suspended, and the small dark speck on its base : more magnified. 
