234 THE MICROSCOPIST. 



exist. He objects to calling the spindle-celled fibroma of 

 the uterus myoma. 



6. Xeuroma (nerve tumor). This also is misapplied to 

 all tumors or nerves, many of which are fibroma. 



7. Angioma (vascular tumor), as nsevi and erectile tu- 

 mors. They may be plexiform or cavernous. 



8. Sarcoma, a large and uncertain group, containing (1) 

 granulation sarcoma, or round-celled sarcoma of Virchow 

 (Plate XXY, Fig. 183). (2.) Spindle-celled sarcoma (Plate 

 XXV, Fig. 184). (3.) Giant-celled sarcoma (Plate XXY, 

 Fig. 185). (4.) Net-celled or mucous sarcoma (Plate XXY, 

 Fig. 186). (5.) Alveolar sarcoma, often resembling carci- 

 noma (Plate XXY, Fig. 187). (6.) Pigmentary sarcoma, 

 or melanoma (Plate XXY, Fig. 188). 



9. Lymphoma, or enlarged lymph-glands. 



10. Papilloma, or hypertrophied papillae. 



11. Adenoma, or glandular hypertrophy, as in goitre ; 

 sometimes forming mucous polypi. 



12. Cystic tumors. If in connection with other tumors 

 they are named accordingly, as cysto-fibroma, etc. They 

 may be simple, compound, or proliferous. 



13. Carcinoma, or cancers, so called from the distended 

 veins sometimes appearing as crabs' feet. 



The old division of cancers was into scirrhus or hard 

 cancer, the outline well defined, the aspect of cut surface 

 glistening, and yielding no juice ; colloid, or soft cancer ; 

 encephaloid, or brain-like, yielding a milky juice full 

 of cells and nuclei, generally soft, affecting neighboring 

 glands, and associated with cancerous cachexia; fungus 

 hsematodes, when protruding and bleeding. Billroth 

 treats of cancers (1) of skin, a glandular ingrowth of the 

 rete Malpighi, and showing globular cells. (2.) Mam- 

 mary cancers. (3.) Of mucous membranes with cylindric 

 epithelium. (4.) Of lachrymal, salivary, and parotid 

 glands. (5.) Of the thyroid gland and ovary. 



It was thought by the early microscopists that a pecu- 



