These are divided into groups of varying structure - Fibrous, Fatty, Calcareous, Melanotic, Osseous and Lacteal.

"Fibrous Tumors are usually situated in the jaw or limbs, they have a firm attachment and are hard and insensible to the touch. Excision is necessary. In the centre of these tumors a cyst, or cavity, containing serum or matter (pus), often exists, and in consequence abscesses form upon their surface.

"Fatty Tumors are commonly met with in the dog, and have no particular position, but occur at any part of the body. They are smooth and shiny upon their surface, unattached to the surrounding tissues, they seldom become inflamed, and are not tender when touched. The treatment is by excision.

Calcareous Tumors

These are common in bitches, and are usually situated in the mammary glands. The treatment is by excision, external applications being of no avail.

"Melanotic Tumors are seldom seen in canine practice. There are a few cases on record, and with them excision has been successful.

"Osseous Tumors are likewise rare in dogs, and when occurring, are invariably associated with rickets; their situation is the limbs.

"Lacteal Tumors have already been fully dealt with under that heading."