THE

GREAT PROBABILITY

OF A

NORTH WEST PASSAGE.

A
General Map
OF
the DISCOVERIES of
Admiral de Fonte,
Exhibiting
the great Probability of a
North-west Passage
BY
Thomas Jefferys,
Geographer to the KING.

THE
GREAT PROBABILITY
OF A
NORTH WEST PASSAGE:

DEDUCED FROM
OBSERVATIONS
ON THE
Letter of Admiral DE FONTE,
Who sailed from the Callao of Lima on the Discovery of a Communication
BETWEEN THE
SOUTH SEA and the ATLANTIC OCEAN;
And to intercept some Navigators from Boston in New England, whom he met with,
Then in Search of a NORTH WEST PASSAGE.

PROVING THE
AUTHENTICITY of the Admiral's LETTER.
With Three Explanatory MAPS.

By THOMAS JEFFERYS, Geographer to the King.

WITH
AN APPENDIX.
Containing the Account of a Discovery of Part of the Coast and Inland
Country of LABRADOR, made in 1753.

The Whole intended for
The Advancement of TRADE and COMMERCE.

LONDON:
Printed for THOMAS JEFFERYS, at Charing Cross.
MDCCLXVIII.

v

TO THE RIGHT HONOURABLE

WILLS EARL OF HILLSBOROUGH,

&c. &c. &c.

ONE OF HIS MAJESTY'S PRINCIPAL SECRETARIES OF STATE,

FIRST LORD COMMISSIONER OF TRADE AND PLANTATIONS,

ONE OF HIS MAJESTY'S MOST HONOURABLE

PRIVY COUNCIL, AND F.R.S.

The Discovery of a North-west Passage havingdeserved the particular Attention of that greatMinister of State Sir Francis Walsingham, with the Approbationof the greatest Princess of that Age, I presumedto ask the Permission to inscribe the followingSheets, on the same Subject, to your Lordship, wrotewith no View of setting any further Expeditions on Foot,or with respect to any particular System, but as a candidand impartial Enquiry, to shew the great Probabilitythere is of a North-west Passage. The Importanceof the Subject, treated with the greatest Regard toTruth, are the only Pretensions I have to merit yourPatronage.

Your Lordship will appear, to the latest Posterity, inthe amiable Light of being zealous for the Glory of hisMajesty, the Honour of the Nation, for promoting the...