in those circles, as an Indian record of a war-party would be to an ordinary Londoner.
Though, however, familiarity with the picture-writing of the Indians, as well as with their habits and peculiarities, might enable the student to make a pretty good guess at the meaning of such documents as the above, which are meant to be understood by strangers, there is another class of picture-writings, used principally by the magicians or medicine-men, which cannot be even thus interpreted. The songs and charms used among the Indians of North America are repeated or sung by memory, but, as an assistance to the singer, pictures are painted upon sticks, or pieces of birch-bark or other material, which serve to suggest to the mind the successive verses. 
Fig. 5.Some of these documents, with the songs to which they refer, are given in Schoolcraft, and one or two examples will show sufficiently how they are used, and make it evident that they can only convey their full meaning to those who know by heart already the compositions they refer to. They are mere Samson's riddles, only to be guessed by those who have ploughed with his heifer. Thus, a drawing of a man with two marks on his breast and four on his legs (Fig. 5) is to remind the singer that at this place comes the following verse:—
"Two days must you sit fast, my friend,—
Four days must you sit still."
Fig. 6.
Fig. 6 is the record of a love-song—(1) represents the lover; in (2) he is singing, and beating a magic drum; in (3) he surrounds himself with a secret lodge, denoting the effects of his
