Mr. Arrowsmith has adopted his delineation of the course of that river, as laid down from the diary of Cornejo, who descended it in 1790. Soria, who came down it in 1826, was deprived of all his papers in Paraguay; and although, on reaching Buenos Ayres, five years afterwards, he not only published a short account of his voyage, but a map also to illustrate it, being entirely from memory, it is little to be depended upon; neither is it reconcilable with the distance from Oran to the Paraguay, as estimated either by himself or Cornejo. Of Soria's voyage, besides his own account, I had a much more full and curious narrative from an Englishman of the name of Luke Cresser, who was one of the party, and whose personal adventures would form an entertaining episode in any history of that enterprise. He was a Yorkshireman by birth, and originally a watchmaker, in which trade, after making a little money at Buenos Ayres, he had found his way into the upper provinces, and had finally become a grower of tobacco in the province of Oran. Having a large stock on hand about the time Soria was about to descend the Vermejo, he was induced to ship it, and to embark with him for Buenos Ayres. He was of the greatest service to the party on the voyage, and was severely wounded, in the skirmish they had with the Indians, by an arrow, which pierced his arm, and occasioned him much and long suffering afterwards. On reaching the Paraguay, had Soria listened to his urgent advice and entreaties, he never would have placed himself in Dr. Francia's power; for which, indeed, there does not appear to have been the slightest necessity. When the vessel was detained by that despot's orders, Cresser, like the rest, was stripped of all he possessed; and, after much suffering, was sent to Villa Real,--a wretched establishment on the Paraguay, about 150 miles above Assumption. There, whilst his companions were bewailing their fate, the more enterprising Englishman obtained leave to proceed into the interior to the forests, where the yerba or tea is gathered, to work for his livelihood; and with such success, that, from beginning without a dollar of his own, by the time he was allowed to leave Paraguay, five years afterwards, he found himself in comparative affluence; and, though only permitted by the dictator to carry out of the country a portion of the yerba he had by his industry collected, he had still enough left when he sailed for Buenos Ayres to compensate him for the loss of all the tobacco with which he had originally sailed from Oran. The narrative of this person contains such curious details, not only respecting his residence in Paraguay, but also regarding the country about Oran, where he had passed some years previously to his voyage with Soria down the Vermejo, that I have thought it worth communicating to the Geographical Society for insertion, if they please, at length, in one of their periodical journals.