HEX 
the medical profefTorfhip at Leyden. This port he oc¬ 
cupied with great credit for twenty years ; when he died 
of the ftone, in 1601. He published feveral works of 
Hippocrates, with commentaries, and occafronally with 
a new verfion, Of his own compofitions, the principal 
are : i. Praxis Median a nova Ratio, 1587, feveral times re- 
publifhed. 2. Injlitutiones Medicina, 1592. 3. De Mortis 
Capitis Humani , 1594; a very learned performance, and 
containing fome rare obfervations of his own. 4. De 
Morbis Oculorum, Aurium, Naji, Dentium, & Oris, 1602 : thefe 
are pofthumous works, edited by his fonOtho; as was 
likewife a book, De gravrffmis Morbis Mulierum, & de Mortis- 
novis & mirandis Hiforice, 1607. 
HEUS'DEN, a town fituated on the borders of Hol¬ 
land and Brabant. It is built in the midft of morafles, 
nearly furrounded by a branch of the Meufe ; well for¬ 
tified with a caftle, bullions, and hornworks. The jurif- 
riidlion of the magistrate extends over feveral villages, 
almoft to Bois-le-Duc. On the 25th of July, 1680, the 
lightning fet fire to the powder-magazine, which killed 
many people, and did confiderable damage to the town. 
The quantity of powder blown up was feventy thoufand 
pounds, befides fome thoufands of grenades. It is fifteen 
miles north-eafl of Breda, and feven fouth-eaft of Gor- 
cum. Lat.51.45. N. Ion. 22.31. E. Ferro. 
HEUS'ZDORF, a towaof Germany, in Upper Saxony, 
and principality of Weimar: eight miles north-eaft of 
Weimar. 
To HEW, v, a. part, hewn , or hewed. [Jjeapan, Sax. 
hauwen, Dut.] To cut by blows with an edged inftru- 
ment; to hack : 
Upon the joint the lucky fteel did light, 
And made fuch way that hew'd it quite in twain. Spenfer. 
To chop ; to cut: 
He from deep wells with engines water drew, 
And ufed his noble hands the wood to hew. Dryden. 
To cut, as with an axe; with the particles down, when 
it fignifies to fell j up, to excavate from below ; off, to 
feparate: 
He that depends 
Upon your favours, fwims with fins of lead, 
And hews down oaks with rufhes. Skakejpeare. 
Scarce can 1 fpeak, my choler is fo great: 
Oh! I could hew up rocks, and fight with flint. Skakejpeare. 
Yet (hall the axe of juftice hew him down, 
And level with the root his.lofty crown. Sandys\ 
To form or Ihape with an axe; with out. —Thou haft 
he wed thee out a fepulchre here, as he that hewed him out 
a fepulchre on high. If. xxii.—To form laborioufly: 
The gate was adamant; eternal frame ; 
Which hew’d by Marshimfelf, from Indian quarries came, 
The labour of a god. Dryden. 
HEW,/. Hewing:. 
Then to the reft his wrathfulbhand he bends; 
Of whom he makes fuch havock and fuch hew, 
That fwarms of damned foules to hell he fends. Spenfer. 
HEW'ER, f. One whofe employment is to cut wood 
©r ftone.—At the building of Solomon’s temple there 
were fourfcQre thoufand hewers. in the mountains. Brown. 
HEW'ING, / The adt of cutting with a keen inftru- 
ment. 
HEW'SON (.Williamjj an ingenious anatomift, born 
in 1739, He wrote Inquiries into the Properties of the 
Blood, and the Lymphatic" Syftem, 2 vols. 8vo. and 
difputed with Dr. Monro the dUcovery of the lymphatic 
fyftem in oviparous animals. He died in 1774. 
HE.XA- AP'SULAR,. adj. in botany, havingfixfeed- 
v c fife Is.. 
KEX'ACHORD,/ iiuancient mufic, a concord called 
by the moderns a fixth. See Music. 
HEX 
8SS 
HEX'AGON,/ [ hexagone, Fr. efagona. It. kexagonim, 
Lat. ei-xyuvoi;, Gr.] I11 geometry, a figure of fix fides, 
and confequently of fo many angles. When thefe are 
equal, it is a regular hexagon. The angles of a hexagon 
are each equal to 120 0 , and its fides are each equal to. 
the radius of its circumfcribing circle. Hencea regular 
hexagon is inferibed in a circle, by fetting the radius off 
6 times upon the periphery. And hence alfo, to deferibe 
a regular hexagon upon a given line, deferibe an equi¬ 
lateral triangle upon, it, the vertex of which will be 
the centre of the circumfcribing circle. The fide o'f a 
hexagon being s, its area will be = 2*5980762$? = 
tang. 6o° = |i^ r 3. 
HEXAG'ONAL, adj. Having fix fides or corners.—- 
As for the figures of cryftal, it is for the moft part hexa¬ 
gonal, or fix-cornered. Brown » 
HEXAG'ONY, / A figure of fix angles.:—When I 
read in St. Ambrofe of kexagonies, or fexangular cellars 
of bees, did I therefore conclude that they were mathe¬ 
maticians ? Bramhall. 
HEXAGYN'I A,/. [from tf, fix, and woman.J 
In botany, one of the orders in the ninth and thirteenth 
clafles of the Linnsean fyftem; containing thofe plants 
which have fix ftyles in the flowers. See vol. iii. p. 257; 
HEXAHE'DRON,/. [from *f*eS'go», Gr.] One of the 
five regular or Platonic bodies; being indeed the fame 
as the cube ; .and is fo called from its having fix faces. 
The fquare of the fide or edge of a hexahedron, is one- 
third of the fquare of the diameter of the circumfcribing 
fphere: and hence the diameter of a fphere is to the fide 
of its inferibed hexahedron as ^3 to 1. In general, if 
A, B, and C, be put to denote refpedtively the linear 
fide, the furface, and the folidity of a hexahedron or 
cube, alfo r the radius of the inferibed fphere, and R;. 
the radius of the circumfcribed one ; then we have thefe; 
general equations or relations : 
1. A = 2r =|Rt/ 3 =t/|B = V C. 
2. B = 2 4 r 2 = 8R 2 = 6 A 2 C 2? . 
3. C = Sr3 =|R3V3=A3 
4- R = r V 3. — h^Vz =lv / 2 B = Wz x 3 /c. 
5. r=^R 1 /3=fA =±i/£B=± 3/C. 
HEXAHEM'ERON, /. [from Gr. fix, and 
a day.] In old divinity, the fix days work of creation. 
A treatife on the fix days creation. Scott. 
HEXAM'ETER,/ [hexametre, Fr. efametro, It. hexd- 
metro, Sp. t^oipnr^oq, Gr. of t|, fix, and ^st^oh, meafure.]; 
In ancient poetry, a kind of verfe confifting of fix feet ; 
the firft four of which may be indifferently either fpon- 
dees or daiftyles; the fifth is generally a dadtyl and the 
fixth always a fpondee. Such is the following verfe of 
Horace:; 
Autpro\deJfe vo\lunt , aut\ dele\£lare po\eta. 
HEXAM'ETER, adj. Confifting of fix feet.—Like 
Ovid’s Fafti, in hexameter and pentameter verfe. f. War * 
ton’s Pope. 
HEXAM'ILA, a town o'f European Turkey,,in the 
province of Romania: twelve miles foiith of Gallipoli. 
HEXAMIL'ION, or Hexamil'i.um,/ A celebrated 
wall, built by the emperor Emanuel, in the year 1413, 
over the ifthmus of Corinth. It took its name from 
fix, and fjufaov, which in the vulgar Greek fignifies a mile,, 
as being fix miles long. Its vile was to defend the Pe=- 
loponnefus from the incurfions of the barbarians. Amu- 
rath II. having.raifed the liege of Conftantinople in 1424,, 
demolifhed the hexamilium, though he had before con¬ 
cluded a peace with the Greek emperor. The Venetians 
reftored it in the year 1463, by 30,000 workmen em¬ 
ployed for fifteen days. The Turks made feveral at¬ 
tempts upon it, and were as often repulfed; they, at 
length, however, fucceeded in totally demolifhing it. 
HEXAN'DRIA,/ [from t|, Gr. fix, and «»«£, a man.] 
In botany, the name of the fixth clafs in Linnaeus'S-fyL, 
tem; comprehending thofe plants which have herma¬ 
phrodite flowers with fix equal ftamens. This is-a na- - 
tiuali 
