540 Defeription of the 
sot infeftious 5 and, in the opinion of the 
moit experienced practitioners, has. never 
proved fatal. 
2. It occafions no other difeafe. On 
the contrary, it has often been known. 
to improve health; and. to remedy thoie 
- difeafes under which the patient before 
laboured. 
3- It leaves behind no blemifh, but a 
blefling ;—one of the greateft ever beftow- 
ed on man,—a perfect fecurity againft the 
future infection of the fmali-pox. - 
From this faithful ftaterment of the ad- 
vantages attending vaccine-inoculations it 
muit appear evident to every unprejudiced 
perfon, that itis the duty, as well as the 
intereft, of every parent, of every indivi- 
dual, and of every nation, to adopt the 
practice, and to haften the extermination 
ef the {mall-pox. 
——a 
For the Monthly Magazine. 
DESCRIPTION of the WaTERs which 
compofe the RIVER MISSISSIPPI 3 and 
REMARKS 02 ihe IMPORTANCE Of its 
FREE NAVIGATION to the AMERI- 
CANS. 
HE Miffiffippi empties itfelf into the 
Gulph of Mexico. Its courfe, in its 
various turnings and windings, from its 
mouth to its junétion with the Ohio, is up- 
wards of nine hundred miles. The Ohio is 
formed by the junction of the Allegheny 
and Monongahela rivers, in latitude 40° 31! 
44”, and in longitude about five degrees 
weftward of Philadelphia. Its courfe is 
about 1188 computed miles, through a 
pleafant, fruitful, and healthy country.— 
At the confluence of the Allegheny and 
Monongahela, ftands Fort Pitt; and about 
two hundred yards from it, on the eaftern 
bank of the Monongahela, is the town of 
Pittfburgh, a place of confiderable impor- 
tance, and daily increafing. ‘The Ohio is 
from four to feven hundred yards wide, 
until it approaches within one hundred 
miles of the Miffiffippi, where it is one 
thonfand yards acrofs. It receives the 
waters of upwards of forty rivers and 
creeks, moftly navigable, and communi- 
cates with lakes Erie, Oritario, St. Clair, 
and Huron. Thefe rivers and creeks in- 
terfect and fertilize the fine tra&tis of land. 
inthe United States. The lands on both 
fides of the Onio, and its branches, ex- 
tending fouth-eaftwardly and fouth-weft- 
warcly, comprize a {pace of one million of 
fquare miles. In the account given of 
it by Captain Hutchins, geographer to 
Congrefs, he delcribes the part he furvey- 
River Miffiffippi. 
[July 1, 
ed, lying between the thirty-third and 
forty-fifth degrees of latitude, and the 
feventy-eighth and ninety-fourth degrees 
of longitude, as containing an extent of 
territory, which for healthfulnefs, fertility 
of foil, and variety of produétions, is not, 
perhaps, furpafled by any onthe habitable 
» globe. 
It produces abundantly (according to 
his account) wheat, hemp, flax, &c. The 
forefts are loaded with fugar-trees, wal- 
nut, chefnut, afh, oak, &c. and abound 
with bears, buffaloes, deer, turkies, &c. 
Mr. Lewis Evans (another agent of 
Congrefs) correborates this ftatement.— 
He adds, that moft of the hills on both 
fides of the Ohio are filled with excellent 
coal, and falt-fprings ; iron ore and lead 
mines are found on its borders. The 
Ohio, and rivers emptying into it, afford 
green and other turtle, carp, fturgeon, 
perch, and cat-fifh; the two latter of an 
enormous fize, viz. perch from eight to 
twelve pounds, and cats from thirty to one 
hundred pounds weight. To the trees 
enumerated by Captain Hutchins, he adds, 
that the high and dry Jands are covered 
with hickory, walnut, grape-vines, &c. 5 
the lowlands with {fycamore, poplars 
cherry, beech, elm, afpen, &c. ; and be- 
low, or fouthwardly, of the Rapids (a fall 
in the Ohio, 70§ computed miles below 
Fort Pitt), he fays there are feveral large 
cedar, or cyprefs-fwamps, where thefe 
trees grow to a remarkable fize ; alfo 
an abundance of canes, fuch as grow 
in South Carolina, The other produc- 
tions of the country (according to Mr. 
Evans,) are wheat, Indian corn, buck= 
wheat, rye, oats, barley, flax, hemp, to-— 
bacco, rice, ‘filk, potath, &c. ; and large 
crops of white and red clover, and other 
ufeful grafs. -About 584 miles below 
Fort Pitt, on the eaftern fide of the Ohio, 
about three miles diftant from it, and at 
the head of a fmail creek or run, where 
are feveral large and miry falt fprings, 
Mr. Evans fays there are found numbers 
of large bones, teeth, and tufks, common- 
ly fuppofed to have been thofe of ele- 
phants, but by our late Dr. Hunter attri- 
buted to belong to fome carnivorous ani- 
mal largey than an elephant. They are 
exactly fimilar to thofe of the Incognitum, 
or Mammoth, which has been exhibited in * _ 
London by Mr. Peale, an American. 
In fome obfervations dddreffed to the 
Earl of Hillfborough,’in the year 1770s; 
when Secretary of State for the North 
American department) by a Mr. Whar-_ 
ton, of Philadelphia, he ftates, for rea- 
foua 
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