CARCINOMA AND FUNGUS ILEMATODES. 179 



quently in part grey, yellow, brownish red, or even 

 dark red ; it is spongy, and on pressure yields a large 

 quantity of a thin milky fluid, which is contained in the 

 nieshes of a friable fibrous tissue. The tumours are 

 invested by a delicate cellulo-vascular sheath, which 

 is easily detached from the substance of the liver. 

 When present with the first variety they generally 

 form the large morbid growths. 



3. CARCINOMA (literally a crab). This form of cancer 

 is not met with in the liver quite so often as the one 

 we have just disposed of; it is, however, sometimes 

 taken for the medullary, and the mistake is accounted 

 for from the fact that the two frequently co-exist. In 

 consistence it forms masses from the size of a filbert to 

 a man's fist, which are surrounded by an investment of 

 delicate cellular tissue, and although the surface is 

 uneven and lobulated, yet the general outline is round. 

 In textu; .111 and almost cart ila-jinous ; in colour 

 it is of a pale yellowish red, and almost of a glassy 

 transparency. These carcinomatous i are com- 

 monly found in considerable numbers, and, like the 

 medullary form, they cause rounded protuberances of the 

 organ, and produce an increase in its weight and size. 



4. I H.KMATODES. This form of cancer is 



:/M! by the abundance of blood-vessels, which 

 are larp', an<l furnished with thin walls, so that they 

 are easily torn, and give rise to the extravasation of 

 blood. This infiltrated medullary cancer is analogous 

 to the other infiltrations of the liver tissues already 

 referred to. It always contains obliterated and obsolete 

 blood-vessels and gall-ducts which are gradually absorbed. 

 The infiltration attacks larger or smaller sections of the 



