29TH may.
My Dear Colvin, - Still grinding at Chap. XI. I began many days ago on p. 93, and am still on p. 93, which is exhilarating, but the thing takes shape all the same and should make a pretty lively chapter for an end of it. For XII. is only a footnote ad Explicandum.
June the 1st.
Back on p. 93. I was on 100 yesterday, b