VI 
PREFACE. 
a man of worth and great skill in natural 
hiftory, and his little piece befides the candour 
and veracity of the writer, derives a great value 
from its being the only account in our language 
of this ftupendous object. P. Charlevoix an 
Author of good credit, ( where the intereft of 
his nation and religion are unconcerned ) has 
given us a defeription perfectly agreeable to 
Mr. Kahn's, tho’ much lefs circumftantial : 
It was in 1722, he was on the fpot, and the 
heights had not then probably been taked by 
inftruments, for he feems to think it very diffi- 
cult if poffible ; He gueffes the great Eall to 
be 140 or 150 feet from a meafure taken by 
founding ; and adds, that he has feen frnall 
birds flutter j uft above the fall itfelf ; we have 
likewife an account of this cataradt Phil. Trans. 
No. 371. p. 69. from Mr. Boruffan tranfmitted 
by Mr. Dudley. Mr. Boruffan relates that the 
Governor of Canada's fon the Marquis de Ca- 
vagnal had founded it, and fixed the perpen- 
dicular fall at 26 fathom, this was alfo in 1722. 
I cannot help taking notice of the alarm Mr. 
K aim's arrival gave the French at Niagara. They 
are confcious their enjoyment of this Fort is a 
manifeft violation of the treat}-' of Utrecht tho 1 
they know the juftice of the Englifh Nation 
will not permit them to compell the Seneka's 
againft their inclination to diflodge them. 
Among other curious parts of Mr. Bartram's 
journal are his thoughts (thrown together at the 
end) on the Origin of the Aborigines of Ame- 
rica ; 
