Upon this occasion it may be observed, that human nature is endued with powers which are only accidentally exerted to the utmost; and that all men are capable of what no man attains, except he is stimulated to the effort by some uncommon circumstances or situation. These Indians effected what to us appeared to be supernatural, merely by the application of such powers as they possessed in common with us, and all other men who have no particular infirmity or defect. The truth of the observation is also manifest from more familiar instances. The rope-dancer and balance-master owe their art, not to any peculiar liberality of nature, but to an accidental improvement of her common gifts; and though equal diligence and application would not always produce equal excellence in these, any more than in other arts, yet there is no doubt but that a certain degree of proficiency in them might be universally attained. Another proof of the existence of abilities in mankind, that are almost universally dormant, is furnished by the attainments of blind men. It cannot be supposed that the loss of one sense, like the amputation of a branch from a tree, gives new vigour to those that remain. Every man’s hearing and touch, therefore, are capable of the nice distinctions which astonish us in those that have lost their sight, and if they do not give the same intelligence to the mind, it is merely because the same intelligence is not required of them: he that can see may do from choice what the blind do by necessity, and by the same diligent attention to the other senses may receive the same notices from them; let it, therefore, be remembered, as an encouragement to persevering diligence, and a principle of general use to mankind, that he who does all he can will ever effect much more than is generally thought to be possible. Among other Indians that had visited us, there were some from a neighbouring island which they called EIMEO or IMAO, the same to which Captain Wallis had given the name of the Duke of York’s island, and they gave us an account of no less than two-and-twenty islands that lay in the neighbourhood of Otaheite. As the day of observation now approached, I determined, in consequence of some hints which had been given me by Lord Morton, to send out two parties to observe the transit from other situations; hoping, that if we should fail at Otaheite, they might have better success. We were, therefore, now busily employed in preparing our instruments, and instructing such gentlemen in the use of them as I intended to send out.