Celsus describes, we fear but too truly, the general result of every known method of treating cancer. He says, some use corrosive applications, some burning irons, and others cut it out with the scalpel; but medicines are of no avail, burning only exasperates the disease, and excision only removes the part affected, for the disease immediately returns, (v, 28.) Galen’s sentiments are partly explained by our author. He states, that the disease is curable only at its commencement. When it has attained any considerable magnitude, he says, it admits of no remedy without a surgical operation; and when the tumour is cut out all around there is danger of hemorrhage, which, if restrained by ligatures, may give rise to the disease in the neighbouring parts, whereas, if cauteries be used to burn the roots of the vessels no inconsiderable danger may result from their application so near to the vital parts. (Therap. ad Glauc. ii; Meth. Med. xiv; Isagoge.) Aëtius gives from Leonidas the following description of the operation on cancerous mammæ. Laying the patient in a supine position, he says, I make an incision into the mammæ above the cancer, and immediately apply a cautery until an eschar be produced to stop the bleeding. I then make another incision deep into the substance of the mamma, and again burn the parts, and so proceed—first cutting and then burning alternately, in order to restrain the bleeding. In this way there is no danger of hemorrhage. After the amputation is completed I again burn the parts until they are quite dry. The first burnings are for the sake of the bleedings, and the last with the intention of eradicating the disease. (xvi, 45.) This operation, described in nearly the same words, occurs in Soranus. (61.) He says, when the disease is scrofulous the burning may be omitted. (Ibid.) Avicenna mentions that after the excision of a cancerous part the actual cautery may be required. And yet, he adds, there may be danger from the burning provided the part affected be near any vital organ. (iv, 3, 2.) Rhases says, that they who make an incision into a cancerous part merely produce ulceration thereof, unless it be so seated that the disease can be completely removed and the parts afterwards burned. (Ad Mansor. vii, 9.) In another work he expresses himself rather favorably of excision and burning. (Contin. xiii.) Haly Abbas approves of the operation when the cancer is seated in the mammæ or extremities. He recommends us to allow the part to bleed until all the melancholic humour is evacuated, and says nothing of the cautery or ligature. (Pract. ix, 12.) Albucasis says that he never saw a case of cancer cured unless the tumour was small and recently formed. He directs us, when the operation is attempted, to cut out the tumour by the roots, and if the hemorrhage from any vein be profuse to stop it by the cautery. (Chirurg. ii, 53.) Serapion expresses himself rather diffidently of excision. (v, 24.)