ABSTRACT
In 1837-1838 Robert Schomburgk carried out the design upon which he was mainly bent, and discovered the sources of the Essequibo, where he hoisted the British ensign: he also reached the Acarai Mountains on the watershed between the Essequibo and the Amazon. The Indians had little cause for anxiety as to their security, especially as it was notorious to them that Schomburgk, who had thoroughly won their confidence, had been marking a boundary, and that he claimed the land within that boundary as British territory. Sawkins appears to have accomplished alone a brief reconnaissance of the Demerara river, while Brown made his first exploration up the Essequibo and on to the savannahs around the Rupununi and Ireng or Mahu. In 1881 the Venezuelan Government granted to General Venancio Pulgar a concession which purported to cover a considerable portion of what was considered by the British their Colony of Guiana.
