Practical podiatry : . ly fol-lowed by hyperemia, and it is therefore necessary to guardagainst hemorrhage in cases in which free incisions havebeen made. Wounds should be packed, and proper bandagesshould be applied to prevent any such possibilities. Apothesine (Parke Davis & Co.) is a new synthetic preparation of definite chemicalcomposition. It is 1/8 as toxic as cocaine, is very soluble in water and alcohol, and may besterilized by boiling for five or ten minutes. It is used in a one per cent, solution andcame into favor during the war, by reason of the scarcity of cocaine and
Practical podiatry : . ly fol-lowed by hyperemia, and it is therefore necessary to guardagainst hemorrhage in cases in which free incisions havebeen made. Wounds should be packed, and proper bandagesshould be applied to prevent any such possibilities. Apothesine (Parke Davis & Co.) is a new synthetic preparation of definite chemicalcomposition. It is 1/8 as toxic as cocaine, is very soluble in water and alcohol, and may besterilized by boiling for five or ten minutes. It is used in a one per cent, solution andcame into favor during the war, by reason of the scarcity of cocaine and is not a habit-forming drug and is therefore easily obtainable. At The FirstInstitute of Podiatry this preparation and novocaine are almost exclusively used for pro-ducing local anesthesias. CHAPTER X HELOMA Derivation. The word lias its origin in the Greek^helos, meaning corn; (plural: helomata). In the accompanying cut will be found a photograph oftwo building nails bearing the name and time of the reign. BUILDING NAILS (hELOS) USED IN PEE-HISTOEIC TIMES of King Gudea in Ur, Chaldea, about 2500 Plaster castsof the above were presented to The First Institute ofPodiatry by Fridtjov Anderson, Colonel in the NorwegianArtillery. These nails were called helOS and because of 149 150 PODIATRY their semblance to the foot excresences, commonly calledcorns, the latter were therefore named Corn, clavus, horn. Definition. An heloma is a circumscribed, conical, deepseated overgrowth of the epidermis, the apex of whichpresses down npon the derma. Corns usually occur aboutthe toes, but may appear upon any part of the body sub-ject to friction or pressure. They range in size from apin head to a ten cent piece. According to their appearance, texture or composition,helomata are classified as follows: Heloma durum, or hard corn. Heloma molle, or soft corn. Heloma vasculare, or vascular corn. Heloma miliare, or seed corn. HELOMA DURUM Heloma durum is a hard circum
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