17- The pollen masses of one cell of the anther drawn asunder; magnified
8 diameters.
18. A group of pollen grains, bursting at. the time of fecundation ; magnified
200 diameters.
19. Some particles of the mucous substance of the stigma; magnified
200 diameters.
20. Some utriculi from the lining of the stigmatic channel, as they
appear at the time of fecundation ; magnified 200 diameters.
