ADVERTISEMENT.
As no astronomical observations have been taken in the voyages related in this collection, the longitude and latitude ascribed to the new-discovered islands in the journals and upon the charts cannot be absolutely depended upon. Indeed the reader will perceive, that the position[4] of the Fox Islands upon the general map of Russia is materially different from that assigned to them upon the chart of Krenitzin and Levasheff. Without endeavouring to clear up any difficulties which may arise from this uncertainty, I thought it would be most satisfactory to have the best charts engraved: the reader will then be able to compare them with each other, and with the several journals. Which representation of the new-discovered islands deserves the preferance, will probably be ascertained upon the return of captain Clerke from his present expedition.
List of the Charts, and Directions for placing them.
| CHART | I. | A reduced copy of the general map ofRussia, published by the Academy of Sciences at St. Petersburg, 1776. | to face the title-page. |
| II. | Chart of the voyage made by Krenitzin andLevasheff to the Fox Islands, communicated by Dr. Robertson, | to face p. [251]. | |
| III. | Chart of Synd's Voyage towards Tschukotskoi-Noss, | p. [300]. | |
| IV. | Chart of Shalauroff's Voyage to Shelatskoi-Noss,with a small chart of the Bear-Islands, | p. [323]. | |
| View of Maimatschin, Communicated by a gentleman who has been upon the spot. | p. [211]. | ||