Page:Cellular pathology as based upon physiological and pathological histology.djvu/55

LARGE AND SMALL ANIMAL CELLS.

49 bourhood are lying several smaller ova, which show the gradual progress of their growth.

As a contrast to these gigantic cells, I place before you an object from the bed-side ; cells from fresh catarrhal sputa. You see cells in comparison very small, which with a higher power, prove to be of a perfectly globular shape, and, in which, after the addition of water and reagents, a membrane, nuclei, and, when fresh, cloudy contents can clearly be distinguished. Most of

Fig. 10. Young ova from the ovary of a frog. A. A very young ovum. B. A larger one. C. A still larger one, with commencing secretion of brown granules at one pole («), and shrunken condition of the vitelline membrane from the imbibition of water, a. Membrane of the follicle, b. Vitelline membrane, c. Membrane of the nucleus, d. Nucleolus. 8. Ovary. 1 50 diameters.

Fig. 11. Cells from from fresh catarrhal sputa. A. Pus-corpuscles, a. Quite fresh, b. When treated with acetic acid. Within the membrane the contents have cleared up, and three little nuclei are seen. B. Mucus-corpuscles, a. A simple one. b Containing pigment granules. 300 diameters.

4