Corrections for the books: Cylindric algebras [Part I, North-Holland, Amsterdam, 1971; MR0314620 (47 #3171); Part II, 1985; MR0781930 (86m:03095b)] by L. Henkin, Monk and A. Tarski, and Cylindric set algebras [Lecture Notes in Math., 883, Springer, Berlin, 1981; MR0639151 (84a:03078)] by Henkin, Monk, Tarski, H. Andréka and I. Németi Chapter