Fig. 38. — Myoma uteri. A simple fibro-myomatous tumour growing in the wall of the uterus. Note the sharp line of demarcation between the growth and the tissue in which it is growing. (24 diam.)

I

Fig. 40. — Fibroma. A simple tumour composed of well-differentiated fibrous tissue. The fibres are arranged in irregular bundles forming a dense firm tissue, (x 100 diam.)

Fig. 42. — " Colloid cancer of stomach "showing the cancer cells in the spaces being transformed into the " colloid material." (< 75 diam.)

Fig. 39. — Secondary cancerous growth in heart wall. Note that the malignant cells are invading and destroying the muscle fibres of the heart, (x 75 diam.)

Fig. 41. — Small round-celled sarcoma. A malignant tumour composed of undifferentiated masses of cells. These cells are readily carried to distant parts and give rise to secondary growths, (x 100 diam.)

XX. g22.

Fig. 43. — Myxoma showing the stellate and branching cells with their processes interlacing and forming a network. The mucinoid substance is

contained in the fine meshes, (x 100 diam.)