Fever, I.
Filters.
Fire--General remarks; to obtain fire from the sun (burning-glasses, reflectors); by conversion of motion into heat (flint and steel, guns, lucifers, fire-sticks); by chemical means (spontaneous combustion); tinder; tinder-boxes; fuel; small fuel for lighting the fire; to kindle a spark into a flame; camp fires Burning down trees; hollows in wood; fire-beacons; prairie on fire; first obliterate cache marks; leave an enduring mark; heating power of fuels; blacksmithery; wet clothes, to dry; tent, to warm; incombustible stuffs ( see "Brands").
Fishing--Fishing-tackle; to recover a lost line; otters; boat-fishing; to see things under water; nets; spearing fish; intoxicating fish; otters, cormorants, and dogs; Fish roe as food; fish, dried and pounded; fish skin (see "Skin"); fish-hook for springes.
Fitzroy, Admiral.
Flags, for signals.
Flannel; to wash.
Flash of sun from mirror.
Flashing signals.
Flashing alphabet.