PLATE III.

FIG. 1.-Section from a soft complex tumour of the parotid. A few well-formed cartilage-cells are seen imbedded in the midst of gelatinous tissue, imperfectly resembling fœtal mucous tissue. This tumour, like the growth represented in the foregoing plates, is an example of the admixture of different varieties of connective tissue often present in the same morbid growth.

FIG. 2.-Section from a gelatinous, semifluid portion of the same tumour, showing an open web of large-branched myxomatous cells, often called colloid.

Fig. 3.-Section of a spindle-cell sarcoma, in which the transition is seen from the ordinary fusiform cells of connective tissue to the larger, plumper, more densely aggregated cells of the new growth.

FIG. 4.—A bit of a pure myxoma pressed beneath the thin covering glass, and showing the entangled meshwork of very delicate fibres and branched cells which formed the bulk of the tumour, viscid glairy fluid, having the chemical characteristics of mucus, filling the interstices. It will be seen that the difference between this structure and that represented in woodcuts 10 and 11 of colloid carcinoma is very striking, although the aspect of the two growths to the unaided eye may be very similar.

PLATE III.

FIG. 1.-Section from a soft complex tumour of the parotid. A few well-formed cartilage-cells are seen imbedded in the midst of gelatinous tissue, imperfectly resembling foetal mucous tissue. This tumour, like the growth represented in the foregoing plates, is an example of the admixture of different varieties of connective tissue often present in the same morbid growth.

FIG. 2.-Section from a gelatinous, semifluid portion of the same tumour, showing an open web of large-branched myxomatous cells, often called colloid.

Fig. 3.-Section of a spindle-cell sarcoma, in which the transition is seen from the ordinary fusiform cells of connective tissue to the larger, plumper, more densely aggregated cells of the new growth.

FIG. 4.-A bit of a pure myxoma pressed beneath the thin covering glass, and showing the entangled meshwork of very delicate fibres and branched cells which formed the bulk of the tumour, viscid glairy fluid, having the chemical characteristics of mucus, filling the interstices. It will be seen that the difference between this structure and that represented in woodcuts 10 and 11 of colloid carcinoma is very striking, although the aspect of the two growths to the unaided eye may be very similar.