Please make the following corrections:—Geol. Mag. March No. p. 123, in footnote, line 2, for “Memoir” read “Meunier.” In May No. p. 240, line 33 from top of page, for the work which Mr. Lee has actually done—read “the work which we see actually done.”—In August Number, p. 382, line 3 from bottom, for lavas read laws.—Edit. Geol. Mag.