these copies be on the cuticular membranes of the paper-birch, as
less liable to injury from damp than common paper.

"The commerce which may be carried on with the people inhabiting
the line you will pursue, renders a knowledge of those people
important. You will therefore endeavour to make yourself
acquainted, as far as a diligent pursuit of your journey shall
admit, with the names of the nations and their numbers;

"The extent and limits of their possessions;

"Their relations with other tribes or nations;

"Their language, traditions, monuments;

"Their ordinary occupations in agriculture, fishing, hunting, war,
arts, and the implements for these;

"Their food, clothing, and domestic accommodations;

"The diseases prevalent among them, and the remedies they use;

"Moral and physical circumstances which distinguish them from the
tribes we know;

"Peculiarities in their laws, customs, and dispositions;

"And articles of commerce they may need or furnish, and to what
extent.