Ixxxii 
INTRODUCTION. 
to be exerted in fulfilling many of them, rendered this a? 
tedious operation ; paper fit for printing them upon was to 
be procured from abroad; and after all thefe various and 
unavoidable difficulties were furmounted, much time was 
neceffarily required for executing a numerous impreffion of 
the long lift of plates, with fo much care as might do juftice 
both to Mr. Webber, and to his feveral engravers. When 
all thefe circumftances are taken into confideration, we truft 
Malacca, part of Cambodia, and the Ifland Sumatra, I have ufed the lateft authority of 
Monfieur D’Apres de Mannevillette’s publications in the Neptune Oriental. 
T he coafts of Guzerat, Malabar, Coromandel, and the oppofite fhore, containing the 
Great Bay of Bengal, and the Ifland of Ceylon, and exhibiting the Heads of the Ganges, 
and Barampooter or Sanpoo Rivers, are inferted from the work of the ingenious Author 
of the map of Hindooftan, publifhed in 1782. 
The China fea is laid down from the chart publifhed by Mr. Dalrymple ; but the longi¬ 
tudes of Pulo Sapata, Pulo Condore, PuloTimoan, Straits of Banca and Sunda, and the 
parts we faw, are as fettled by us, together with the Eaft coaft of Niphon, the principal of 
the Japanefe Iflands. 
The Jefo and Kurile iflands, the Eaft coaft of Afia and Kamtfchatka, as well as the fea 
of Okotfk, and the iflands lying between Kamtfchatka and America that were not feen in 
the voyage, are taken from a Ruffian MS. chart, got by us at the Ifland of Oonalafhka. 
The Northern countries from Cape Kanin, near the White Sea, as far Eaft as the Ri¬ 
ver Lena, I have given from the Great Ruffian Map, publifhed at Peterfburg in 1776, 
including the Euxine, Cafpian, and Aral Seas, as alfo the principal lakes to the Eaftward; 
the intent of which is to fhew the fource of the large rivers that empty themfelves into 
the different oceans and feas. 
Every other part of the chart not mentioned in this account, is as originally placed by 
Captain Cook. 
The whole has been corrected from, the lateft aftronomical obfervations, felected from 
the Tables compiled by Mr. William Wales, F. R. S. and mathematical mafter of Chrift’s 
Hofpital, for the Nautical Almanacs ; From thofe in the Mariner’s Guide by the Rev. Dr. 
Mafkelyne, F. R. S. and Aftronomer Royal, publifhed in 1763 ; From the Connoiffance 
cles Temps for 1780 and 1781 ; From Profeffor Mayer’s Geographical Table; From 
the Voyages of Meflrs. d’Eveux de Fleurieu, Verdun, de Borda, and Chabet, &c.; From 
the Table lately publifhed by Mr. Dalrymple for the ufe of the Eaft India fhips ; From 
the Philofophical Tranfaffions of the Royal Society; and from the Obfervations of our 
late Navigators. 
HEN Y . ROBERTS. 
Shoreham, Sussex, May 18, 1784* 
that 
