The philosopher's fountain; the balneum Mariae.
Fons pullans, vel pulsatilis. See Fontanella.
(From fons, a fountain). See Fon-tanella,
(From foro, to pierce). An hole. See Os and Caput.
Foramen caecum. The name of a hole in the middle of the tongue. Sec Lingua.
Foramen lacerum. See Caput.
Foramen ovale, See Cor.
Os, (from foramen, a hole). See Ethmoides os.
Pincers; (quasi ferriceps, from ferritin iron, and capio, to take hold). A small forceps is called volsella. A surgeon's instrument of numerous and varied uses. The small forceps are employed to take hold of small parts, to remove dressings, or minute bodies, for which the fingers cannot be conveniently-employed. Larger ones are used to extract bullets from wounds, polypi from the nose, calculi from the bladder, and occasionally the foetus from the vagina and uterus, when advanced so low as to be conveniently reached, and the pains from debility or other causes are slack and inefficient. In each case their forms are different, but they can only be properly considered when we treat of each subject.
See Heister's Surgery. Mulder on the Forceps and Lever. Vide Embryulcia.
Form; opposed to substance or essence; as formal is to material. Thus a spasm is a formal cause of inflammation; a thorn a material cause.
(From formica). Formiate. Salts produced by the union of formic acid with different bases; not used in medicine.
(From formica,an ant). Creeping; an epithet bestowed by Galen on a low unequal pulse.
See Herpes exedens.
(From the Arabic term fom,) Fornus. A furnace. Furnaces are chemical instruments to expose conveniently any body to the degree of heat required. In all furnaces, we must endeavour, 1st, to confine the heat as much as possible to the object; 2dly, to prevent its being dissipated; 3dly, to produce the heat required with as little fuel as possible; 4thly, to be able to regulate the degree of heat according to our wants.
Of furnaces there are a great variety invented by-chemists for the performance of their operations, which may be seen, with their constructions and uses, particularly in the Encyclopaedia Britannica, under the article Chemistry; Lavoisier's Elements of Chemistry; and Dr. Black's Lectures. Unfortunately, we have no Dictionary of Chemistry to refer to; and the object is not so properly medical as to induce us to enlarge on it. See also Athanor, Balneum Mariae; and Dr. Lewis's Commercium Philosophico-technicum, part the first.