Resumen de Errata.

• This article provides corrections to articles in past issues of "Scientific American." In "Music and the Brain," by Norman M. Weinberger, research showing that infants prefer consonance to dissonance should have been attributed to Laurel Trainer of McMaster University, instead of Sandra Trehub of the University of Toronto. Also, the ratio for a minor second for instance, C-sharp to C , used in studies of dissonance, was incorrectly stated as 9:8, which refers to a major second for example, D to C. Depending on the particular type of scale used, the ratio is closer to 19:18, for example, 17:16. In "What's In a Name?" by Christine Soares, it was incorrectly stated that members of the Chordate phylum must have a backbone.