The glyphs for these twenty days are shown in figures 16 and 17. The forms in figure 16 are from the inscriptions and those in figure 17 from the codices. In several cases variants are given to facilitate identification. A study of the glyphs in these two figures shows on the whole a fairly close similarity between the forms for the same {39} day in each. The sign for the first day, Imix, is practically identical in both. Compare figure 16, _a_ and _b_, with figure 17, _a_ and b. The usual form for the day Ik in the inscriptions (see fig. 16, _c_), however, is unlike the glyph for the same day in the codices (fig. 17, _c_, _d_). The forms for Akbal and Kan are practically the same in each (see fig. 16, _d_, _e_, and _f_, and fig. 17, _e_ and _f_, respectively). The day Chicchan, figure 16, _g_, occurs rarely in the inscriptions; when present, it takes the {40} form of a grotesque head. In the codices the common form for this day is very different (fig. 17, _g_). The head variant, however (fig. 17, _h_), shows a slightly closer similarity to the form from the inscriptions. The forms in both figure 16, _h_, _i_, and figure 17, _i_, _j_, for the day Cimi show little resemblance to each other. Although figure 17, _i_, represents the common form in the codices, the variant in _j_ more closely resembles the form in figure 16, _h_, _i_. The day Manik is practically the same in both (see figs. 16, _j_, and 17, _k_), as is also Lamat (figs. 16, _k_, _l_, and 17, _l_, _m_). The day Muluc occurs rarely in the inscriptions (fig. 16, _m_, _n_). Of these two variants _m_ more closely resembles the form from the codices (fig. 17, _n_). The glyph for the day Oc (fig. 16, _o_, _p_, _q_) is not often found in the inscriptions. In the codices, on the other hand, this day is frequently represented as shown in figure 17, _o_. This form bears no resemblance to the forms in the inscriptions. There is, however, a head-variant form found very rarely in the codices that bears a slight resemblance to the forms in the inscriptions. The day Chuen occurs but once in the inscriptions where the form is clear enough to distinguish its characteristic (see fig. 16, _r_). This form bears a general resemblance to the glyph for this day in the codices (fig. 17, _p_, _q_). The forms for the day Eb in both figures 16, _s_, _t_, _u_, and 17, _r_, are grotesque heads showing but remote resemblance to one another. The essential element in both, however, is the same, that is, the element occupying the position of the ear. Although the day Ben occurs but rarely in the inscriptions, its form (fig. 16, _v_) is practically identical with that in the codices (see fig. 17, _s_). The day Ix in the inscriptions appears as in figure 16, _w_, _x_. The form in the codices is shown in figure 17, _t_. The essential element in each seems to be the three prominent dots or circles. The day Men occurs very rarely on the monuments. The form shown in figure 16, _y_, is a grotesque head not unlike the sign