This is a collection of 60 essays on dialectology written in the period from 1942 to 1979. The essays fall into the categories of theoretical, applied, and critical dialectology. Some of the more recent titles include: "System and Variety in American English,""Dialect Differences and Social Differences in an Urban Society,""Dialectology and the Integration of the Schools,""Can Linguistics Solve the Composition Problem?" and "Changing Patterns of Southern Dialects." Important older titles include "Some Principles of American Dialect Study,""The Relationship of the Speech of the American Negroes to the Speech of Whites,""Some Social Differences in Pronunciation,""Dialect Geography and Social Science Problems,""Dialect Differences and Inter-Group Tensions," and "A Study in Ethnolinguistics." The "Linguistic Atlas of New England" (1952) is included, as are a variety of regional dialect studies. The section on critical dialectology is devoted to 19 reviews of the work of other dialectologists. (JB)