Ditto to Sydney S. 46 deg. W. 4,500
Otaheite to Sydney S. 79 deg. W. 3,400
Rialejo to Manilla N. 89 deg. W. 8,860
Ditto to St. Peter and St. Paul,
Kamschatka N. 66 deg. W. 6,000
Ditto to Pekin N. 79 deg. W. 8,600
Ditto to Jeddo, Japan N. 79 deg. W. 7,300
Colombia River to Canton S. 77 deg. W. 6,200
Icy Cape to Kamschatka S. 49 deg. W. 1,280
Rialejo to Port Illuluk, Oonoolashka S. 57 deg. W. 4,550
Rialejo to Colombia River S. 47 deg. W. 3,000
Jeddo to Canton S. 62 deg. W. 1,610
Manilla to Canton N. 41 deg. W. 680
Batavia to Jeddo N. 53 deg. E. 3,100
Cape of Good Hope to Hobart Town S. 85 deg. E. 6,000

The course of mails from Falmouth to Canton, by Isthmus of America, by
Rialejo, will be 173 days; and to Sydney, by the same route, 158 days.

_Isthmus of America._

The appearance of the Isthmus of America, from Darien to the borders
of Mexico, indicates, in a very forcible manner, that this portion of
the earth is a fragment of a larger portion, which had, at some
important epoch, been to a great extent submerged around it, and that
the present Isthmus is the remains of a wider continental tract. In
several places within the limits mentioned, the ridges are broken, and
the country abounds--in fact, is studded--with high peaks, isolated,
yet greatly elevated. To the southward of Lake Nicaragua, between 9 deg.
and 10 deg. North latitude, about Cortago or Carthage, the land, or rather
ridge, is so elevated, that although within thirty miles of the
Pacific on the one hand, and forty miles of the Atlantic on the other
hand, yet during the winter months, from November to March, frost and
ice abound. The climate everywhere, in the interior parts, is
represented as being very healthy, and the country fruitful and
pleasant.

_Chagre and Panama._ (p. 132)

Long.
Chagre, according to Capt. Forster, from Greenwich,
in time, 5h 19' 49.27"
Observatory of