The cards required for the first 50 numbers, including only compounds formed from day-signs and excluding day-signs used simply as such, amount to practically one half of the number required for the whole index. Certain elements, notably the _kin_, the _tun_, the monkey-face with banded headdress, already referred to, the face with tau-eye, the _yax_, the cross, produce a great number of compounds--a fact of note, as it is evident that the number of compounds, having due regard to our limited material, is an index to the relative position of the idea in the Mayan vocabularies. Some of the day-signs produce practically no compounds, others a great many. The compounds fall readily into a system of primary and secondary derivatives, by which their relations may be easily studied, and their proportions recognized. Coming to the distinguishing of variants, one first meets the fact that the three codices differ. The writing of the Dresden and Perez is regular and accurate, the Perez exceedingly so. Every different variant must here be accounted for. In Tro.-Cort. the writing is crude and careless, so that we have many evident abbreviations which are not genuine variants. In the next place, certain regular differences occur in this or that glyph or particle, between the forms of the different manuscripts. Thus the Perez uses [Hieroglyph] and the others [Hieroglyph] and so on. A comparison of the compounds shows that these must be the same. The regular variations between the three manuscripts and variations of abbreviation, when well evidenced, may be eliminated. The day-signs have many variants, mostly quite simple, and all checked positively by the use of the form in some day-series. Ix has many forms. There are at least three entirely different Cimi forms: [Hieroglyphs][TN-4] There are found two different forms of the closed eye, one of which certainly is Cimi, the other occurs regularly in such different compounds (and I think never as a simple day-sign), as to make it necessary to separate it; [Hieroglyph] it has probably a different meaning entirely--perhaps that of sleep. * * * * * A noteworthy technical line is to be found in the drawing of the glyphs. Whereas in the case of the day-signs, faces, and conventional forms in general, certain variations of handwriting, etc., are evidently permitted, but only within certain definite lines, in some few animal glyphs no two instances are just alike. In other words, the glyphs in general are conventions with established meanings--actual writing;[39-*] but we also have _pictures_ of birds or animal forms, where the writer is not following convention, but nature. The freedom of style used in the latter case only serves to emphasize the conventionality of the former, and to separate the entire system from either picture or rebus writing. See the following fish-glyph forms: [Hieroglyphs]