The limits of this paper do not allow of presenting a list of the characters in the pictographs which have become known. It may be properly demanded, however, that some of the characters in the petroglyph, Figure 1, should be explained. The following is a list of those which were interpreted to Mr. Gilbert, as mentioned on page 29 _supra_. [Illustration: FIG. 156.] [Illustration: FIG. 157.] Figure 156 is an inclosure, or pen, in which ceremonial dances are performed. Figure 157 is a head-dress used in ceremonial dances. [Illustration: FIG. 158.] Figure 158 shows different representations of houses. [Illustration: FIG. 159.] [Illustration: FIG. 160.] Figure 159 sketches the frames or sticks used in carrying wood on the back. Figure 160 shows different forms of arrows. [Illustration: FIG. 161.] Figure 161 represents the blossoms of melons, squashes, etc. [Illustration: FIG. 162.] [Illustration: FIG. 163.] Figure 162 shows three ways in which lightning is represented. Figure 163 represents clouds. [Illustration: FIG. 164.] Figure 164 represents clouds with rain descending. [Illustration: FIG. 165.] Figure 165 shows various forms of stars. [Illustration: FIG. 166.] Figure 166 shows various representations of the sun. [Illustration: FIG. 167.] Figure 167 shows various representations of sunrise. It is of interest in this connection that in the pictorial notation of the Laplanders the sun bears its usual figure of a man’s head, rayed, as reported in Schoolcraft, _op. cit._ I, 426. See drawings in Scheffer’s Hist. of Lapland, London ed., 1704. It may be desirable also to note, to avoid misconception, that where, through this paper, mention is made of particulars under the headings of Customs, Religious, etc., which might be made the subject of graphic illustration in pictographs, and for that reason should be known as preliminary to the attempted interpretation of the latter, the suggestion is not given as a mere hypothesis. Such objective marks and conceptions of the character indicated which can readily be made objective, are in fact frequently found in pictographs and have been understood by means of the preliminary information to which reference is made. When interpretations obtained through this line of study are properly verified they can take places in the card-catalogue little inferior to those of interpretations derived directly from aboriginal pictographers. HOMOMORPHS AND SYMMORPHS.