inexactness.

62. Muskrat Lake. On Champlain's map of 1632 will be seen laid down a
succession of lakes or ponds, together with the larger one, now known
as Muskrat Lake, on the borders of which are figured the dwellings of
the savages referred to in the text. The pond which they passed is the
last in the series before reaching Muskrat Lake. On the direct route
between this pond and the lake, known as the Muskrat Portage road, the
course undoubtedly traversed by Champlain, there was found in 1867, in
the, township of Ross, an astrolabe, an instrument used in taking
latitudes, on which is the date, 1603. It is supposed to have been lost
by Champlain on his present expedition. The reasons for this
supposition have been stated in several brochures recently issued, one
by Mr. O. H. Marshall of Buffalo, entitled _Discovery of an Astrolabe
supposed to have been left by Champlain in 1613_, New York, 1879;
reprinted from the _Magazine of American History_ for March of that
year. Another, _Champlain's Astrolabe lost on the 7th of June, 1613,
and found in August, 1867_, by A. J Russell of Ottawa, Montreal,
1879. And a third entitled _The Astrolabe of Samuel Champlain and
Geoffrey Chaucer_, by Henry Scadding, D.D., of Toronto, 1880. All of
these writers agree in the opinion that the instrument was probably
lost by Champlain on his expedition up the Ottawa in 1613. For the
argument _in extenso_ the reader is referred to the brochures above
cited.

[Illustration of an astrolabe.]

Mr. Russell, who examined the astrolabe thus found with great care and
had it photographed, describes it as a circular plate having a diameter
of five inches and five eighths. "It is of place brass, very dark with