Fig.1.

PLATE I. (AFTER BEALE & FREY.) MODE OF ORIGIN OF LIVING CENTRES IN ALREADY EXISTING BIOPLASM.

Fig. 2.

Production of formed material, layer within layer,
and its accumulation upon the surface of bioplasm,
as in an epithelial cell.

Fig. 3.

Minute particle of bioplasm from living pus
corpuscle, showing the different forms which
it assumed in the course of five seconds.
X 2800.

rodoth of an inch

One of the mucus corpuscles represented in Fig 1, in a living state, magnified by the 2800 diameters, showing alterations iu form during one minute.

Fig. 5.

Fig 4.

Most minute ovarian ora undergoing develop. ment in the midst of a delicate tissue con. stituting the ovary and composed of cells. The orum seeing to arise by the growth of one of these. Magnified 500 diameters.

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THREE COLORED PLATES

AFTER BEALE AND FREY.

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