Though a steady and unwearying worker he was not rapid. He would throw aside sheet after sheet to be rewritten, especially if there was anything he wished to make particularly clear and strong, or any reasoning to be worked out from the soundest point of view. It was always a wonder to those about him that he could stand as he did the unceasing labor, but he was a sound sleeper even if the hours might be short, and of a vigorous, wiry, active temperament, and when he did take a holiday, he took it heartily. His rest and recreation were in journeys, longer or shorter, and every two or three years some long outing would be taken, to give him the needed refreshment. But he must always be busy even then, somewhere to go, something to see; rest in quiet seemed impossible to him for more than a day at a time. TO CHARLES WRIGHT. CAMBRIDGE, January 23, 1852. I am printing on “Plantæ Wrightianæ,” the first part of which (as I work in so much general matter, especially Tex-Mexican), to the end of Compositæ, will take 225 pages or more, with ten plates,--the most important memoir I ever wrote, and will indelibly fix our name on the Texan-New-Mexican Flora.... I have just found a letter of Sullivant’s, dated May 27, 1850, in which he says, “Send me by all means Wright’s Texan Mosses and Hepaticæ....” Poor fellow! as I wrote you before, he lost his wife while I was away, and was overwhelmed, as she was everything to him, and as good a muscologist almost as he.... You are in a fine field. Hold on and keep a good heart. I long to see what Colonel Graham is now bringing on to me.... June 5. There, my dear Wright, I consider myself very much of a gentleman! For your favor of the 12th April reached me only this afternoon, and now before the sun has gone down I am answering it! Your letter came very opportunely too. For, though Colonel Graham has been back so long, it was only yesterday that I got the collection he brought home with him to Indianola (and the seeds); and to-day I opened it and had looked over only two bundles. And I was saying to myself, Now if I only had Mr. Wright’s list with localities, I should do very well. And when my letters came from the office, yours, with said list inclosed, was among them. The plants look well, but I have only peeped into them yet. I am glad if you have found Amoreuxia malvafolia, but I have not yet hit upon it.... I am still very busy with college work, for a month longer, and with the Garden; and the Exploring Expedition work has been pressing me, and still will. But I shall somehow distribute your 1851 collection very soon, name them up to the end of Compositæ, and in the course of the summer determine many of the monopetalous families. I have already named and described a few of these and some Apetalæ to please Colonel Graham, and named a new Pentstemon after him (which I have growing, too), which compliment seems to gratify him.