1000000030

HY DRO S T AT

e s.

821

will'agrce with oue

~nolher:

and thehm of Cevnal hodi.,

will

nlelVn b'y tbem, aod exprelfed by the oumber upon

tbe Ceale, thus.

Air, io Cevere cold \I'ealher, in our climate, from

i O·25. Air iD winler, from 26 10 42. Air in Cpring

an<! aUlumo, from 43 to 53

Air al midCummer, from

68.

Extreme beat of Ihe fummer fun, from 86

10 100. Bumr ju!l melling,

95.

Alcohol boils wilh

174

175.

Brandy wilh 190.

Water

212. Oilof

lurpealine 550. Tin mehs wilb 408, aod lead wilb

HO. Milk freezes about 30, vinegar 28, and blon<! 27.

body Cpeci6cally lighler Iban a Buid'will Cwimupoo

ill furf¡ce . iD fuch a manner, Ibat a quantilY of Ihe ftuid

•qual in bulk with Ihe

immelfe~

part of Ihe bodl', will

be as heavy as the whole body. Heoce, the- light–

er a fl oid is, the deeper

body will fiok in it; upon

which depeods !he coo!lrullioo of !he hydrometer or

water'poiCe.

From this we can eafily 60d the weight of a Ibip, or

10y olher body Ibat CVlims io waler. For, if we multi–

ply Ihe number of cubic fee! which are uoder Ihe Curface,

by62

Ihe oumberof pouods io ooe foot of frelb wmr;

or by 63 , Ihe oumber of pounds io a fool of falt waler ;

Ihe produll IVill he Ihe weighl of Ihe Ihipóaod all Ihat is

in il: For, fioce it is Ihe weight of thelhip

tlm

diCplam

the witer, il mufl cootioue to

fiok

~ntil

il has removed

H Y P

HYGROMETER, a machioe, or inJlroment whereby

ID me.fure the degree, of drioeCs, or moi!lore of tbe

air, or ralher ohlle almoCphere.

lbere are divers fOil

of hygrometers; for what–

ever body eilher fwells or Ibrinks, by dryoeCs or moif–

tore, is capable of being formed iDlo ao hygrometer.

S~eh

are woods of mo!l kind. partieularly alb, deal,

poplar,

&c.

Sueh alfo is calgut, Ihe beard

a wijd

oal.

&c.

HYMEN, in analomy. See AHATOM..Y, p. 277.

HYMENJEA, iD bOlaoy, a genus of!he decandria mo–

Dogyoia claCs. The calix confins of 6ve Cegmenu,

lod thecorolla of

pelals; aod Ihepod is Iolled wilh

fanoaceous pulp. There is but ooe Cpecies, a nalive

of Ameriea.

HYMENJEAL, fomethiog bclong to marriage, fo called

from hymen.

HYMN. a religiou. fong.. The hymos fung in

Ih~

chrilliao

ehurch~

dl!lioguilhed f,om Ihe pfalml, are

pieees of poetry compofed by pious but oot infpired

aUlhors.

HYOIDES, in aoatomy See ANA'rOMV, p. 166,

HYUSCYAMUS. HtH' BANE, in bOlany, ageDus of Ihe

penlandria monogynia claCs The eorolla i9 obluCe sDd

fu nod Ibaped; the !laminaare iocJined; aod Ihc eapfule

is opercul¡Íed, and confin. of

two

eells. There are fix

fpccies, only one of. which,

viz.

Ihe niger, or com·

mon hen-Ilane, is a native of Brilaio. The Icavet,

&c.

of Ibis plant are highly oareolie aod poifoDOUS,

and now difregarded io pralliee.

HYOTHYROlDES, iD aoatorey. Set

AN.!:rO"'Y~

3°0.

VOL.

No. '61.

as murh waler al is equal to it in lOeigh!; and Ihererore

Ihe pan ionm"rfed mull

cqual in bulk to fueh

porrion of Ihe waler as i. (qual 10 the w,ighl of the

whole Ibip.

To prove'lhis by experimenl, lel a ball of Come light

wood, Cueh as fir or pear·tree, be pUl ioto waler con–

lained in a gJafs

velTeI;

and let Ihe velfel be pOI inlll

~eale

at one end of abalance, and counlerpoifed by lVeieht.

Ibe oppofile feale: Ihen, markiog lhe heighl of' Ihe'

waler in Ihe v,lfel, lake out Ihe ball ; and fill up Ihe

velfe! wilh waler 10 the fame height Ibal it !lood al wheri

Ihe ball was iD il; aDd Ihe fame weight will couolerpoi(t!

it as before•

~rom

Ihe velfel's beiDg fill ed up to Ihe (ame hcighl:at

wh,eh Ihe lValer !lood when Ihe ball wa. iD it, il is evi–

deot that Ihe quanlity Eoured io is equal in magnilude 10

Ihe immerfed par! of the ball ; and from !he fame \Veigh!

eouolerpoifing, it is plaio Ihat the waler poored iD is e–

qual iD weight 10 lhe whole ball.

In troy wtight, 24 grains make a peonyweight,

pennyweighl make ao ounce, and r

ouoees a pouod. lo

",oirdopoife weighl, 16 drams make an ounee, and.J6

ounees a pouod. The troy pound contaio,

760

grai~s,

and Ihe avoirdupoiCe pouod

7°00:

and henee, rhe a–

voirdupoife dram weighl

27.34

graios, and tbe avolr–

dupoiCe OUDee 43

H Y P

HYPANTE', or HvtElPANTE, a nante givenby lh e

Grceks to tbe feal! of Ihe prefeotarioo of JeCo. in Ih e

temple.

This word, whieh figoifies lowly or homble meeting,

was given 10 this fea!l, from the mwing of old Sin\OQ

and Anna lhe prophetcf.

Ibe lemple, IVheD Jefus wal

brooghl Ihilher.

HYPECUM,

'lJJild

CUMlN,

in bolany, a genu! of ¡he

tetrandria digynia clars. The calix confins of I\lIO

leaves, and Ihe corolla of four petals,. Ihe IWO OUIcr–

mo!! of whieh are broader, aod divided iOlo Ihree Cc:g–

meol!. There are four fpeeitl, Done of Ibem D.tives

of Briuin.

HYPERBATON, io grammar, a figuralive eon!lrullio"

ioverting !he oalural aod prop" order of ",ords aDd

fenlences.

HYPERBOLA. See COl/IC SECTIOHS.

HYPERBOLE,

rhelorie, a figure, wherebylhetrulh

and reality of Ihiogs are exceffively eilher enlarged or

diminilhed.

An objell uncommoo ",ilh.rcCpeél 10 fize, eilher verJl

sreal of in kind or very linle, Ilnkes os lVilh lurpriCe-;

andi Ihls emotion forees ·upon Ihe mind a momenllr}'

eonvillion Ihat Ihe Objlll il greater or lers Ihao il

.in rcalily : the fame elfell, preciCely, allends figura.

tive graDdeur. or liulencfs; aod hence Ibe hypetbole,

which exprelfts Ihis mom'col,ry eonvillioo.

wriler,

taking advMolage of Ihis oatur.1delufion, enriches h¡'

de/eriplion grearly. by Ibe hyperbole : aod rhe rcad

er, (Ven in hi. eooleO mOmCOI!, reJin,cs rhis figure,

being fcnfible lbal it

Í$

!he opmlioQ of

n~ture

upon

warm faney,

8 X