The discovery of the Source of the Nile was also a subject of these conversations, but it was always mentioned to me with a kind of diffidence, as if to be expected from a more experienced traveller. Whether this was but another way of exciting me to the attempt I shall not say; but my heart in that instant did me justice to suggest, that this, too, was either to be atchieved by me, or to remain, as it had done for these last two thousand years, a defiance to all travellers, and an opprobrium to geography.
Fortune seemed to enter into this scheme. At the very instant, Mr Aspinwall, very cruelly and ignominiously treated by the Dey of Algiers, had resigned his consulship, and Mr Ford, a merchant, formerly the Dey’s acquaintance, was named in his place. Mr Ford was appointed, and dying a few days after, the consulship became vacant. Lord Halifax pressed me to accept of this, as containing all sort of conveniencies for making the proposed expedition.
This favourable event finally determined me. I had all my life applied unweariedly, perhaps with more love than talent, to drawing, the practice of mathematics, and especially that part necessary to astronomy. The transit of Venus was at hand. It was certainly known that it would be visible once at Algiers, and there was great reason to expect it might be twice. I had furnished myself with a large apparatus of instruments, the completest of their kind for the observation. In the choice of these I had been assisted by my friend Admiral Campbell, and Mr Russel secretary to the Turkey Company; every other necessary had been provided in proportion. It was a pleasure now to know that it was not from a rock or a wood, but from my own house at Algiers, I could deliberately take measures to place myself in the list of men of science of all nations, who were then preparing for the same scientific purpose.
Thus prepared, I set out for Italy, through France; and though it was in time of war, and some strong objections had been made to particular passports solicited by our government from the French secretary of state, Monsieur de Choiseul most obligingly waved all such exceptions with regard to me, and most politely assured me, in a letter accompanying my passport, that those difficulties did not in any shape regard me, but that I was perfectly at liberty to pass through, or remain in France, with those that accompanied me, without limiting their number, as short or as long a time as should be agreeable to me.