He went in to Boston for the family Thanksgiving dinner, though there had seemed some threatening of a cold, but he pronounced himself perfectly comfortable. Still there was a quick breathing and some listlessness, so that he was nursed a little on Friday; though he saw Miss Murfree, who had been brought by Mrs. Houghton to ask him to settle some question about a flower of the Southern Alleghanies, and he entered into the matter with all his old life and eagerness. That evening he had two slight chills, so that the doctor was summoned the next day, and fearing some chest trouble, as he seemed threatened with one of his bronchial attacks, advised him to keep in bed. On Sunday his pulse and temperature had improved so much that he was allowed to get up and go down stairs at noon, the doctor congratulating him on the success of the treatment. There seemed a weakness of the right hand, which, however, passed away, and he wrote that evening the letter to Dr. Britton, which follows, and when remonstrated with for making the exertion, said “it was important and must be written.” Sunday Evening, November 27, 1887. DEAR DR. BRITTON,--I wish to call your attention either in a personal way or in the “Bulletin,” if preferred, to a name coined by you on the 223d page of this year’s “Bulletin.” “Conioselinum bipinnatum (Walter, Fl. Car. under Apium), Britton, Selinum Canadense, Michx., 1803.” I want to liberate my mind by insisting that the process adopted violates the rules of nomenclature by giving a superfluous name to a plant, and also that in all reasonable probability your name is an incorrect one.