WCP3671

[1]

Geographical Establishment

Engraving, Lithographic & Printing Office

9, Charing Cross, London.

6. April 1853

Sir,¹

I have the honour to enclose you an original paper "On the Rio Negro",² by Alfred R. Wallace, accompanied by an original map, which I am desirous to submit to the notice of the Royal Geographical Society.

In these documents we are made better acquainted with a region very imperfectly known, and the features of that magnificent river the Rio Negro, are well described. That river The physical development of that river, its³ [2] great breadth, its intricate labyrinth of innumerable islands, — is probably not exceeded by any other River in the World.

The River Uaupes, considered to be the headstream of the Rio Negro, never before explored by Europeans, is now for the first time delineated in the map by M^r. Wallace.

I have the honour to be Sir | your obedient Servant | A Petermann⁴ [signature]