400 I S E 
human race, he did not negleft that of his own country. 
It was to him, in conjunction with Gefner and Hiazel, 
that the Helvetic Society was indebted for its eftablifn- 
tnent; and in the year 1777 he had the fatisfaflion of 
feeing a fimilar fociety formed from a plan which he had 
drawn up in his native city, and which met with great 
fupport from the citizens. He carried on a very exten- 
five correfpondence both in Switzerland and in foreign 
countries; and he wrote many excellent critiques in the 
Deutfehe Bibliothek, which are diftinguilhed by their acute- 
nel's, modefty, and adherence to truth. He married in 
the year 1756, and lived to have eight children and ten 
grand-children ; but, being attacked with the dropfy, he 
died in the year 1782, at the age of fifty-four. Hirfck- 
ing's Manual of eminent Perfons who died in the eighteenth 
Century. 
I'SEMBERT (Nicholas), a learned French ecclefiaftic, 
was a native of Orleans, where he was born in the year 
s 565. He became a celebrated doftor and profeffor of the 
.Sorbonne, and taught theology a long time with great 
applaufe in the fchools of that faculty. He died in 164.2, 
aged about feventy-feven years. He was the author of 
A Treatife on Theology; and A Commentary on the 
:Summa of St. Thomas, in 6 vols. folio, in the Latin lan¬ 
guage, which have given occafion to the Jefuits to com¬ 
mend him in their writings, as one of the moft learned 
divines of whom the faculty of theology at Paris can boaft. 
I'SEN, a river of Lower Bavaria, which runs into the 
Inn oppofite New Oettingen, 
I'SEN, a town of Bavaria : fifteen miles eaft-fouth-eaft 
of Freifingen, twenty-four miles eaft-north-eaft of Mu¬ 
nich. 
I'SENACH. See Eisenach, vol. vi. p.395. 
I'SENARTS, or Eisenarts, a confiderable town of 
Germany, in Aultria and in Stiria; famous for its iron- 
mines. Lat.46.56.N- Ion. 15. 25. E. 
I'SENBURG (Upper), a principality of Germany; fitu- 
ated in the YVetterau, about thirty miles long, and ten 
wide, which confifts properly of the lordlhip of Budin- 
gen, raifed to a county in the year 1442, and fome other 
eftates near the county of Hanau. The houfe of Ifen- 
burg is divided into feveral branches, the chief of which 
are Ifenburg Birftein, Ifenburg Budingen, Ifenburg 
Wachterfbach, and Ifenburg Meerholz, each taking their 
furname from towns on the eltate: of thefe the firft was 
affeffed to the matricula 69 florins 56 kruitzers ; the fe- 
cond, 23 florins and 42'- kruitzers; the third, 22 florins 
36 kruitzers; and the laft, 14 florins lyj kruitzers; and 
Beffe Darmftadt for Ifenburg, 28 florins. To the impe¬ 
rial chamber the whole were taxed at 113 rix-dollars 48 
kruitzers. The elder branch was raifed to a prince of 
the empire in the year 1442. 
I'SENBURG (Lower), a county of Germany, and for¬ 
merly governed by counts of its own, as a fief of the elec¬ 
torate of Treves. Count Erneft, the laft of thefe counts, 
dying in the year 1664, without heirs, the elector of 
Treves feized upon the greateft part of the county. A 
fmaller part of it is poffeffed by the counts of Wied-Run- 
kel, and another by the barons of Walderdorf. This 
•county was rated in the matricula at 56 florins. To each 
chamber-term it paid 40 rix-dollars 54 kruitzers; of which 
fum the eledlor of Treves paid 32 rix-dollars 40^ kruit- 
•.zers; the .count of New Wied, 5 rix-dollars 6J kruitzers; 
the count of Wied-Runkel, two rix-dollars 48^ kruit¬ 
zers; and the baron of Walderdorf alfo two rix-dollars 
48^ kruitzers. 
I'SENBURG, a town of Germany, which gives name 
to the county, fituated on the Ifer, and furrounded with 
iharp rocks ; on one of which is a caftle, built by Charle¬ 
magne: ten miles north of Coblentz. Lat. 50. 30. N. Ion. 
y- 35- E. 
I'SENBURG, a town of Germany, in the county of 
;Mark : four miles weft of Hattingen. 
I'SENBURG (New), a town of Germany, in the county 
I S E 
of Ifenburg, founded by French refugees: three miles 
fouth of Frankfort on the Maine, four fouth-weft of Of¬ 
fenbach. Lat. 50. 3. N. Ion. 8. 38. E. 
I'SENDICK. See Ysendick. 
I'SENGHEIN, a town of the Auftrian Netherlands, 
with the title of a principality, feated on the river Man- 
dera, in lat. 50. 44. N. Ion. 3. 18. E. 
I'SENHAGEN, a town of Weftphalia, in the princi¬ 
pality of Luneburg : twenty-four miles eaft-north-eaft of 
Zelle. 
ISE'O, a town of Italy, in the department of the Be- 
naco, on a lake to which it gives name, through which 
the river Oglio takes its courie. The town was anciently 
called Sckino: twelves miles north-well of Brefcia, and 
forty north-eaft of Milan. 
I'SER, a river of the Tyrolefe, which rifes about five 
miles north from Infpruck, pafles by Munich, Mofpurg, 
Landfhut, Dingelfingen, Landau, &c. and runs into the 
Danube two miles below Deckendorf. 
I'SER, a river of France, which rifes about four miles 
fouth-eaft of Mont Calfel, and runs into the Yperle near 
Fort Kenoque. 
I'SER, a river of Bohemia, which runs into the Elbe 
near Alt Buntzlau. 
lSE'RE, a river which rifes in the Alps, about twelve 
miles from Mount Cenis, in a mountain called IJeran, in 
the duchy of Savoy, pafles by Monftier, Montmelian, &c. 
in Savoy; after entering France, it pafles by Grenoble, 
St. Quentin, Romans, &c. and joins the Rhone about 
three miles above Valence. It is navigable for boats as 
far as Montmelian. 
ISE'RE, a department of France, conftituted of the 
heretofore Dauphiny, about eighty miles in length, and 
from twenty-five to thirty-five in breadth; it takes its 
name from the river I fere, which crofles it. Grenoble is 
the capital. 
ISE'RINE, f. in mineralogy, a fpecies of Titanium, 
which fee. 
I'SERLOHN, or Lohn, a town of Germany, in the 
county of Mark. The Lutherans have three churches, 
and the Calvinills one; the Roman-catholics celebrate di¬ 
vine worftiip in a houfe. The manufactures of the place 
are confiderable in iron, tin, ribbons, velvets, filks. Huffs, 
&c. thirty-two miles north-eaft of Cologne. Lat. 51.18. N. 
Ion. 7. 40. E. 
ISER'NIA, a town of Naples, in the Molife, fituated at 
the foot of the Apennines; the fee of a bifhop, immedi¬ 
ately under the pope: twelve miles weft-fouth-well of 
Molife, thirty-two north of Capua. Lat. 41. 38. N. Ion. 
14. 2. E. 
ISER'TIA, f [named from M. Ifert, a German, in the 
Danifti fervice, as a furgeon on the coaft of Guinea.] In bo¬ 
tany, a genus of the clals hexandria, order monogynia. The 
generic characters are—Calyx : perianthium one-leafed, 
luperior, coloured, four or fix toothed, permanent. Co¬ 
rolla : one-petalled, funnel-form; tube long, cylindric, 
Ilightly curved ; border fix-cleft; divifions iubovate, ra¬ 
ther upright, villofe. Stamina: filaments fix, very fhort, 
within the mouth of the corolla; anthera; linear, fattened 
by the back, upright. Piftillum: germ inferior, roundifh ; 
ftyle filiform, furrounded at the bafe by a glandule; ftig- 
ma fix-cleft. Pericarpium: pome fubglobofe, crowned 
with the calyx, lucculent, fix-celled ; the fhell of the 
cells fragile. Seeds: feveral, fmall, angular, rough.— Ef- 
fential CharaEler. Calyx coloured, four or fix toothed ; 
corolla fix-cleft, funnel-form; pome fubglobular, fix- 
celled, many-feeded. 
Ifertia coccinea, a Angle fpecies; the Guettarda cocci- 
nea of Aubl. Guian. It is a tree with a trunk ten or 
twelve feefin height, and about eight inches in diameter; 
the bark wrinkled, and of a ruffet colour, the wood light, 
and of a loofe texture. Branches quadrangular, ftraight, 
with oppofite branchlets, channelled and covered with a 
ruffet down j at their origin are two embracing ftipules. 
- Leaves 
