But before all the details of the plan were finally determined upon, Park was desired by Lord Camden, to consult Major Rennell, and obtain his opinion both with regard to the scheme and objects of the expedition, and Park's own sentiments relative to the Niger, as stated in his Memoir. For this purpose he went to Brighthelmston, where Major Rennell then was, and remained with him several days; during which time, the subjects proposed by Lord Camden were repeatedly discussed between them. With respect to the supposition relative to the termination of the Niger, Major Rennell was unconvinced by Park's reasonings, and declared his adherence to the opinion he had formerly expressed with regard to the course of that river. As to the plan of the intended expedition, he was so much struck with the difficulties and dangers likely to attend its execution, that he earnestly dissuaded Park from engaging in so hazardous an enterprize. His arguments, urged with all the warmth and sincerity of friendship, appear to have made a great impression upon Park; and he took leave of Major Rennell with an apparent determination to relinquish the undertaking. But this conviction was little more than momentary, and ceased almost as soon as the influence and authority from which it proceeded were withdrawn. On Park's return to London, his enthusiasm revived; and all doubts and difficulties were at an end. The doubts expressed by Major Rennell were of course, communicated by Park to the Secretary of State; but, as he accompanied the communication with his own answers and remarks, the objections were not deemed of sufficient weight to produce any material change in the intended arrangements.