7

Almquist, E., Journ. Infect. Dis., vol. xxxi., p. 483, 1922.

8 Bergstrand, H., Journ. Bact., vol. viii., No. 4, p. 365, 1923.

9 Wade, H. W., and Manalang, C., Journ. Exper. Med., vol. xxxi., No. 1, P. 95.

10 Reed, G., and Orr, J. H., Journ. Bact., vol. viii., No. 2, p. 103, 1923.

11 Clarke, J. J., Protists and Disease, 1922.

DESCRIPTION OF FIGURES.

FIG. 1.-Linking forms between small coccus and yeast-like body. Mouse carcinoma. Incubated forty-eight hours. Fixed corrosive. Cut in paraffin. (Stained Leishman x 800.)

FIG. 2.-Staphylococcal form passing through plasm and granule into bacillus. Incubated twenty-four hours in acidified horse-serum. Dried film. (Leishman x 1000.)

FIG. 3.-Unstainable plasm as globules of greatly varying size. Human carcinoma. Incubated seventy-two hours in horse-serum. Dried film. (Methylene blue x 1000.)

FIG. 4.-Do. Human carcinoma. Incubated forty-eight hours in ascitic fluid. Film fixed with corrosive. (Methylene blue x 1000.)

FIG. 5.-Unstainable plasm as regular and irregular globules in and amongst cells. Mouse carcinoma. Incubated forty-eight hours in horse-serum. Dried film. (Leishman x 700.)

FIG. 7.-Unstainable plasm as small uniform-sized glistening globules emerging from nucleus. Human carcinoma. Incubated twenty-four hours in ascitic fluid. Dried film. (Methylene blue x 1200.)

FIG. 8. Unstainable plasm globules in cell. four hours in horse-serum. Dried film.

Human carcinoma. Incubated twenty(Methylene blue x 1000.)

FIG. 9.-Unstainable plasm in glistening stage (sclerotium). Human carcinoma. Incubated five days in ascitic fluid. Dried film. (Methylene blue x 700.)

FIG. 10.-Plasm globules and branching plasm filament. Mouse carcinoma. Incubated seven days in horse-serum. Dried film. (Leishman x 1100.)

FIG. 11. Unstainable plasm globules and rods. One rod emerging from cell. Mouse carcinoma. Incubated forty-eight hours in horse-serum. Dried film. (Leishman x 1100.)

FIG. 12.-Do. Nucleus torn up by the emerging plasm threads.

FIG. 13.-Do. Two plasm rods emerging from nucleus.

FIG. 14.-Do. Four plasm rods and unorganised plasm emerging from nucleus.

FIG. 15.-Do. Large number of plasm rods emerging from nucleus.

FIG. 16.-Branching plasm hyphae emerging from cell. At left, thicker hypha expanding into plasm globule. Human carcinoma. Incubated twenty-four hours in horse-serum. Dried film. (Methylene blue x 800.)

FIG. 17.-Thin branching plasm hyphæ emerging from cell. Human carcinoma. Incubated twenty-four hours in horse-serum. Dried film. (Methylene blue × 800.)