DEAR REDFIELD,--If you hear of my breaking down utterly, and being sent to an asylum, you may lay it to Aster, which is a slow and fatal poison. Apparently it will take a year or more for me to finish it, with the greater chance that it finishes me before that time.... April 24. Thanks for both specimen and sympathy. The former is here safely returned. The A. glacialis I must seek in Nuttall’s herbarium, now at the British Museum. The principal troubles in Aster are packed away, to try on again, in London, Paris, and Berlin. TO R. W. CHURCH. CAMBRIDGE, May 17, 1880. MY HONORED AND DEAR FRIEND,--Is it possible (I fear it is) that your letter to me at the beginning of the winter (telling me who Balfour, M. P., is) has been all this while unacknowledged? I fear it is even so. In the mean time much has happened, at least in your old world, on which interest centres; here not much, but constant and rather humdrum work for me. We have got through the winter, a mild one, in contrast to yours, so severe and trying, and our spring opens pleasantly; and Mrs. Gray and I are well and happy. You have had a parliamentary election, the result of which we delight in, though it took us, and seemingly most of you, by surprise. I fancy you are pleased to see Gladstone again at the helm, and still more at the collapse of Jingoism,--not a moment too soon. But let me hasten to tell you that Mrs. Gray and I contemplate crossing the Atlantic early in September, and of passing at least a full year in England and on the Continent. A busy year it must be, if my powers hold out; for I must do a deal of work, and I want to have a little play. I wish I could be more ready, by the finishing of my general study of the vast order Compositæ, so that I might know exactly what researches I must make in London, Paris, Berlin, etc. I have not got on as I expected; but, as I am to reach seventy if I live to near the end of the current year, I must no longer postpone my voyage. Indeed, I would leave at midsummer if I could get away. But the American Association for the Advancement of Science meets in Boston at the end of August, and has a day in Cambridge. And it would not do for me, an ex-president, to turn my back on it, and upon a houseful of friends whom we wish to entertain. But the moment it is over we shall hope to be off. I think I must work at Aster, etc., at Kew for a few weeks; and I have a fancy for a run through the west and south of France and, perhaps, Spain! You will be returning from some summer trip about the time we reach England. Cannot you and Mrs. Church get away from a dark and dull London November, and go with us to a summer region! I sent you my Yale Lectures, which had to treat difficult and delicate matters. I find they have been useful to some on either side. TO A. DE CANDOLLE. CAMBRIDGE, June 8, 1880.