A first performance of "Macbeth" was given on 4 March and repeated on the 6th. On 21 March 1846 the engagement in New Orleans ended and the Keans continued their tour in Mobile, Alabama (cf. Richard Denman Strahan, The American Theatrical Tours of Charles Kean, PhD diss., University of Florida, Gainesville 1984, pp. 90-93). This timeframe overlaps with Charles Lyell's documented visit to New Orleans from 24 February to 10 March 1846 (cf. Hubert Skinner, "Charles Lyell in Louisana", pp. 243-245, in: Tulane Studies in Geology and Paleontology 4.12 ). - The "blue pill" refers to a common mercury-based medicine, also called "blue mass" that was believed to alleviate various kinds of ailments. It was most famously used by Abraham Lincoln to treat his "melancholic disposition". - Traces of former mounting..