Published online by Cambridge University Press: 20 January 2017
Graphemes T-757 and T-788 (Thompson 1962) are identified as a single sign representing a rodent. Intermediate forms are cited, the use of the sign in glyph T-1.60:757 is discussed, and its substitution for T-501 is noted. It is suggested that before Thompson’s catalog can be successfully used for statistical comparisons it needs to be converted to a catalog of signs by investigations of the use of the individual graphemes in context.