It is proposed by the author to publish the result of his observation on the mythology, distinctive opinions, and intellectual character of the aborigines. Materials exist for separate observations on their oral tales, fictitious and historical; their hieroglyphics, music, and poetry; and the grammatical structure of the languages, their principles of combination, and the actual state of their vocabulary. The former topic has been selected as the commencement of the series. At what time the remaining portions will appear, will depend upon the interest manifested by the public in the subject, and the leisure and health necessary to the examination of a mass of original papers, the accumulation of nearly twenty years. The character and peculiarities of the tribes have been studied under favourable circumstances and new aspects; offering, it is believed, an insight into their mental constitution, as yet but imperfectly understood.