The albumen-like sarcoma is a gibbous, tenacious, albumen-like tumor, sparely and but partially vascularized where its texture is slightly reddened and less firm. It consists, generally, of a white or yellowish-white, solid, fragile mass. Here and there it exhibits clefts or fissures, which contain a synovia-like fluid. It consists, in part, of a uniform, almost structureless or indistinctly fibrous mass. According to Muller, it is made up of a basement of multifariously interwoven, microscopic fibres, amongst which are interspersed a vast multitude of globules. The tumor is said to have yielded no gluten by boiling; the scanty extracts to have been thrown down by the reagents of casein, and the insoluble main mass to have represented an albuminous body.

We have only once encountered this new growth, namely, in the bone, within a loopholed, bony sheath.

A very interesting variety of sarcoma is the: