yAND FAMILY DISPENSATORY,, 63 
The tympanum, or drum, called alfo pelvis, which contains the internal or inbred airy, 
and the four bones, called malleolus, incus, tapes, and orbiculare, as a\fo.a ligament, 
two,fenefire, or windows, (whichare lite holes in the cavity,). anda water paflage ; 
from this cavity goes.a channel into the palate of the mouth... The /adprinthus, cal- 
led alfo fodina, is a cavity full of crooked and manifold. turnings; the entrance 
hereinto is the oval fenefrra, and joins itfelf to the following cavity ; it has four holes 
befides the oval, and afifth, which is termined in. the cochlea or third cavity. The 
cochlea has three or four windings, (with a wreathed or fnail-like figure,) the wind. 
ings mutually receiving oneanother: thofe that are thick of hearing have only one 
ortwo of thofe windings; this cavity is cloathed. with an exceeding thin. and foft 
membrane, and adornedwith multitudes of little veins, which turn themfelves about 
the wreathings of the cochlea, and by many branches creep into the fecret turnings of 
Os fphancides, or the wedge-fafhioned bone, becaufe it is feated as a wedge in the 
middle of the bones of the fkull, at the fides it goes along with the.os petrofum, 
from whence it is feparated by. a rough chink; above ic touches che firft, fourch, 
and fixth, bones, of the upper jaws below it touches the bones of the palate of 
the mouth, and is placed under the brain, as a foundation, fo that it touches almolt 
all the bones of the head and upperjaw :- in children it is made of four bones, but — 
in grown perfons it is but one. Ir is-folid, and the thickeft of all the bones of the 
head, where it makes the bafis of the fkull, In the external table are two remarka- 
ble epapby/és, near the fides of the holes of the nofe, formed like the wings of a bat. 
Im the internal table are four little procefies, in fhape of a Turkith daddie,: called 
fila Turcica, fall of litele holes, whofe ufes are to elaborate the in-breathed air, to 
make‘fpirits, and to pafs out pituitousexcrements through the funnel, out of the ven 
triclesof thé brain: Ithas fundry perforations, by which the optic and motory 
nerves of the eye, and other nerves for the motion of other parts; as-alfo veins and 
svisiiés fev noGrithment, pally V2 uae’ edacr Aalih vi isidw some di i 
Os ethmoides, the fponge or fieve-fafhioned bone, having in- it many holes, (by 
which finells pafs to the brain,) efpecially in the inner fide of it, where it joins the 
head, and this part is properly called eriérajas from this within the Ocul arifes a 
fharp apophi/ts; refembling a cock’s-comb, by which the ethmoides is divided ifto 
tivo’ parts} from this procefs is oppofed another, without the noftrils, and diftin- 
guithing them, called the divider of the noftrils, as:alfo feprum naf. The chiefitfe — 
Sf the bybiboidés fs'tovaleer-the air'drawn'in with finells, that the fpeciesofedoites 
and therefore in 4 vorp2a; this bone being obftracted, the fmelling is lofts alfo ‘hete- 
