Bruce Cass, a leading teacher of wine appreciation and national director of the Society of Wine Educators, will give his seminar on "Small California Wineries" at Catholic University Oct. 24 to 27.

Two separate classes are planned. Consumers will attend four evening classes from 7 to 11 p.m. Each day about a dozen wines will be sampled. Some of the subjects to be covered: vocabulary, label regulations, aroma versus bouquet, aging in different oaks (Wed.); varietal character and grape varieties, viticulture and vinification, aging, role of technology (Thurs.); styles and regionality, style as it relates to winery personalities, new research, technology versus economics (Fri.).

On Saturday evening there will be a joint class with the Trade group. Wine cellars, wine as an investment, wine in restaurants and forming tasting groups will be discussed and there will be a "banquet" featuring 10 foods marched with specific wines.

Sessions for members of the wine trade will be held from 9 a.m. to 1 p.m., Oct. 24 to 27, plus the Saturday evening banquet. The content of this course will differ from the consumer presentations.

The fee for the consumer course is $60 per person; for the trade course (limited to 22 persons) it is $85. Each student may bring one guest to the Saturday evening fete for $15. Those wishing to enroll should send checks made out to the Catholic University Office of Continuing Education, P. O. Box 75, Washington, D.C. 20064 by Oct. 12. Cards will be mailed the week of Oct. 14 giving exact location of the seminars.

For further information telephone the Office of Continuing Education, 635-5256, or write for a brochure to P.O. Box 16171, Suitland, Md. 20023 and enclose a stamped, self-addressed envelope.