This book is an introduction to linguistics, written for the beginning student. Among the topics explored are speculations about the origins of language, its nature, how it grows, and how it changes. Other topics include what is essential in the structure of language, the similarities and differences among languages, how the varying patterns of syntax and speech affect communication, and what problems are encountered in translation from one language to another or in inventing an artificial language. The author discusses growth and changes in formal languages that come through idioms, slang, trade names, acronyms, and slogans. She also examines psychological aspects of language such as the relation of sound and spelling to meaning and mood. A short bibliography is included. (Author/DI)