SIMPLE a.
aw), any contract, whether verbal or written, which is not of record or under seal. J. W. Smith. Chitty. -- Simple equation (Alg.), an eqyation containing but one unknown quantity, and that quantity only in the first degree. -- Simple eye (Zoöl.), an eye having a single lens; -- opposed to Ant: compound eye. -- Simp…
SPIRAL a.
s used in light machinery, in which spiral gears, instead of bevel gears, are used to transmit motion between shafts that are not parallel. -- Spiral operculum, an operculum whih has spiral lines of growth. -- Spiral shell, any shell in which the whorls form a spiral or helix. -- Spiral spring. See the Note under Sp…