The cañon trip well repaid the journey and its rough accessories. Some of the views are of those depicted by Powell. We find that Tylor and Moseley were here last year. As the man whom we had introductions to at Flagstaff was absent for a day or two, though we found he had left substitutes, and as we wanted to get home as soon as we could, we gave up the visit to the cave and cliff dwellings. I dare say the models in clay, made at Washington, are as good as the originals. So we came on, one and a half nights and two days, and to-night we shall sleep in beds at St. Louis. We bear this sort of travel quite well. From Mohave to the Colorado is very sandy and complete desert, descending eastward many hundred feet. Near Mohave lots of tree yuccas, looking very like those in northern part of Mexico. From the Colorado to Peach Spring we passed in the dark, but had risen to about 6,000 feet, and we kept on an elevation of 4,000 to nearly 8,000 feet all across the rest of Arizona and New Mexico, the higher parts wooded with conifers, that is, Pinus ponderosa of the Rocky Mountains form and Juniperus. At Las Vegas, New Mexico, we laid over one train, to rest and visit the Hot Springs; no great to see, except a spick and span new hotel, too fine for the place, and some very hot water. Well, this trip, which will nearly round out to three and a half months, has been long and enjoyable indeed. At St. Louis will be letters, perhaps one from you. Ever yours, A. GRAY. Part of yesterday and last night was down along the Arkansas, the reverse of our journey eight years ago. Country much settled up. CAMBRIDGE, August 26, 1885. ... Charles Wright is dead, at seventy-three and a half; had been suffering of heart-disease, went out to his barn, was missed as the evening drew on, was found dead. So they go, one by one.... The summer is almost gone,--one hardly knows how,--but, then, we have a longer and finer autumn than you have in England. The five hundred copies which I printed in 1878 are gone. And, as I have to print new copies, I take the opportunity to correct on the stereotype plates when I can,--a great lot of wrong references to volume, page, plates,--that is, such as we have found out. What a bother they are, and how impossible to make correct in the first place, and to keep so through the printer’s hands! Then there are lots of important corrections to make, and new species and genera galore. So,--in an evil moment, you will say--I set about a supplement to this new issue,--also of the other part. For, as I have now brought out in the two parts all the Gamopetalæ, and as I begin to doubt if I shall hold out to accomplish much more, I thought it best to leave behind at least these in good state. But it is no small job. And this, with the great amount of herbarium work that goes along with it, or beside it, just uses up the summer; for I dare guess it will keep me occupied all September....