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AMBIDEXtER, one who usfes both Hands alike, the
Left as well as the Right, and this in Cafes where only the
tflI of one is nececiary
The Word io formd from the Latin ambo, both, and dex-
*ter, right hand -Hippocrates obferves, that this never hap-
pens to W omen.
In a legal Senfe, Ambidexter fignifies a Juror, Tc. who
receives Money of both Parties, for the giving his Verdiff,
cW. for which he is to forfeit decies tantum, ten times as
much as he receives. See JUROR.
AMBIENT, a Term applied to fuch things as incompafs
others round about.
Thus, the Bodies fituate around any other Body, are cal-
led the Ambient, and often the Circum-Ambient Bodies.
And the whole Body of Air, becaufe it incompaffes all
things on the Face of the Earth, is often by Phyfical Writers
called, by way of Eminence, the Ambient, or Ambient Air.
See AIR.
The Word is form'd of the Latin Ambire, to incompafs,
go round.
AMBIGENAL Hyperbola, in Geometry is that which
has one of its infinite Legs inscribed, and the other circum-
fcribed. See HYPERBOLA, and CURVE.
AMBIGUOUS, fomething dubious, obfcure, or which
may be taken in different Senfes.-The Word is form'd of
the Latin ambo, both, and ago, I drive ; q. d. that which
keeps the Mind wavering, or in Sufpence; not knowing
which fide to chufe.
The Anfwers of the antient Oracles were always ambigu-
ous. See ORACLE.
AMBIT, of a Figure, in Geometry, is the Perimeter,
Circumference, or Sum of all the bounding or incompaf-
fing Lines, that conflitute or include it. See PERIMETER,
CIRCUMFERENCE, EC.
AMBITUS, among the antient Romans, fignified the Adt
of fuing, or making lntcreft for Offices.
The Candidates, in this Cafe, went about the City; and
into all publick Places, and Atfemblies, to beg Voices ;
which was call'd Ambitus ; am, in the antient Latin, figni-
fying circum, about, or around, and ire, to go. See CAN-
D1DATE.
AMBLE, AMBLING, in Horfemanlhip, a peculiar kind
of Pace, wherein a Horfe's two Legs of the fame Side, move
at the fame time. See PACE.
The ambling Horfe changes Sides at each remove; two
Legs of a fide being in the Air, and two, on the ground,
at the fame time: An Amble is ufually the firfi natural Pace
of young Colts; which, as foon as they have Strength
enough to trot, they quit.-There is no fuch thing as an
Amble, in the Manage; the Riding-Mafiers allowing of no
other Paces, befide Walk, Trot, and Gallop: Their ReaI
fon is, That a Horfe may be put from a Trot to a Gallop,
without flop ing him; but not from an Amble to a Gallop,
without fudi Stop ; which lofes time, and interrupts the
Juflnefs and Cadence of the Manage. See TROT, GAL-
LOP, FC.
There are various Practices and Methods of Difcipline,
for bringing a young Horfe to Amble  Some chufe to toil
him in his Foot-pace thro' new-plough'd Lands ; which na-
turally inures him to the Stroke requir'd in the Amble.
Its Inconveniencies are, the Weaknefs and Lamenefs that
fuch diforderly Toil may bring on a young Horfe.
Others attempt it by fudden flopping, or checking him
in the Cheeks, when in a Gallop; and thus putting him in-
to an Amazednefs, between Gallop and Trot; fo that lofing
both, he necelTarily flumbles on an Amble.-But this is apt
to fpoil a good Mouth and Rein; and expofes the Horfe to
the Danger of an Hoof-reach, or Sinew-firain, ly over-reach-
ing, hC.s
Others prefer ambling by Weights, as the heft way ; and
to this end, fooe overload their Horfe with exceffively
heavy Shoes ;  which is apt to make him interfere, or
firike ffort with' his hind Feet.-Others fold leaden
Weights about the Fetlock Paflerns; which are not only
liable to the Mifchiefs of the fbroer, but put the Horfe in
danger of incurable Strains, crufhing of the Coronet, and
breeding of Ring-bones, C.c.-Others load the Horfe's
Back with Earth, Lead, or the like maffy Subilance; which
may occafion a Swaying of the Back, overfiraining of the
Fillets, Ee.)c
Some endeavour to make him Amble in hand, ere they
mount his Back, by means of fome Wall, fmooth Pale or
Rail, and by checking him in the Mouth with the Bridle-
hand - and correaing him with a Rod on the hinder Hoofs,
and under the Belly, when he treads falfe: But this is apt to
drive a Horfe to a defperate Frenzy, ere he can e made to
underhand what they would have of him; and to rear,
fpraul out his Legs, and make other antick Pollures, which
are not afilly quitied again.
Others think to ef*ui it by a pair of hind Shoes with
long Spurns or Plates before the Toes; and of fitch length,
that if the Horfe offers to trot, the hind-ffot beats the foire-


A


fHot. But this occafions Wounr
Often bring on an incurable Lau
Some attempt to procure an
Lifts firait about his Gambrel
gartered for a Stiflle Strain; a
for two or three Weeks, and aft
-This is a Sanvji Method,
Horfe cannot then trot but with
be Suffirers i and tho the Amb,
and unfightly i becaufe attende,
Parts.
In efefe, AHimbling by tte IZ-
Nature, the betie and modl aflfu
There are divers Errors ufua
as, ?hat the Tramel is oft mar
Stroi e;  but makes a Horfe I
confufedly; or too fhort, which
up his hind Feet fo fuddenly,
him to a String-halt; from wh
cover'd. Sometimes the Trarr
vent falling put above the Kr
which Cafe, the Beaft cannot
can the fore-Leg compel the hir
this, the Trarnel be made Ihort
main Sinew of the hind-Leg, ar
Thighs; fo that the Horfe cant
and cringing behind.
As to the Form of the 7Trz


Leather, which is inconvenient; in that it will either firetch
or break, and thus confound the Certainty of the. Operation.
In a true Tramel, the fide-Ropes are to be fo firm, as not
to yield a Hair's-breadth ;  the H ofe foft, and to lie fo clofe,
as not to move from  its firfi Place;  and the Back-band
flat, no matter how light, and to defcend from the Fillets fo
as not to gall.       I
When the Horfe by being 'ramneled on one fide, has at,
tain'd to Amble perfedtly in the Hand; it is to be changed
to the other fide, and that to be likewife brought to Rule.
When, by this changing from one fide to another, w ith a
half Tramel, the Horfe will run and amble in the Hand, rea-
dily and fwiftly, without Snappering and Stumbling ; which
is ordinarily done by two or three Hours labour; the whole
Tramel is to be put on, with the broad, flat, Back-band, and
both fides tramel'd alike.
AMBLYGONOUS Angle, in Geometry, is an obtufe
Angle ; or an Angle confifing of more than go Degrees. See
ANGLE, and OBTuSE.
A Triangle is faid to be Amblygonous, when it has one
Angle greater than a right Angle. See TRIANGLE.
The Word is Greek ; compos'd of       V;A oltuje, anti
>5,oia Azkle
AMBLYOPY, AmBLYOPIA, ,ip Mcdicine, a Difeafe of
the Eyes; otherwife called Gutta Serena and Amaurofis.
See GuTTA Serena, &c.
The Word comes from 4CAVS,  , obtuftis, dull, and 'G-,
video, I fee.
AMBO, a kind of Pulpit, or Delk, antiently ufed in
Churches, whereon the Prieffs and Deacons Ilood to read, or
flng part of the Service i   and preach to the People.  See
PULPIT.                     p
It was afcendcd by Steps; which occafioned that part
of the Office perform'd there, to be called the Gradual.
See GRADUAL.
;   The Term is derived from dn kiwo, I mount.-Thc La-
tins alfo called it Analogium; by reafon they read there.-
The Ambo was mounted upon two Sides; and hence forne
derive the Appellation, from ambo, both.
The Gofpel was read at the Top of the Ambo;o the
Epifile a Step lower.
AMBROSIA, in the Heathen Theology, Lec. a delicious
kind of Food, whereon the Gods were fuppofed to feed. See
GoiD.
LlUcian, rallying thefe poetical Gods, tells us, that Am.
brofia and Net5ar, of which one is the Meat, and the other
the Drink of the Gods, were not fo excellent as the Poets
defcribe them; fince they would leave them for Blood and
Fat, which they come to fuck from the Altars like Flies.
The Word is compounded of the Privative Particle cc, and
BrprT., Mortal; in regard it render'd thofe who fed thereon
immortal, or was the Food of the Immortals.
AMEROSIAN, in Church Hiffory.-We frequently read
of the Ambrofian Rite, the Ambrofian Office, &c. denoting
a particular Office, or Formula' of Worfhip, ufed in the
Church of Milan; which is foretimes alfo called the Am-
brofian Church. See RITE, OFFICE, 27C.
We alfo meet with the Ambrofian Chant, or Song;
which was diflinguilh'd from the Roman, in that it was
ftrongeir and higher.
The Term takes its rife from St. Ambrofe, Archbifhop Of
Msilan in the IVth Century, who is ufually fuppofed to have
been the Author of this Office. Yet fore are of Opinions 0n
the Church of Milan had an Office diffirent from that of
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