Niagara is not at all spoiled by a very dizzy-looking suspension bridge. Is to have another still nearer to the Horse-shoe opened in July. My last sight of that scene (last Sunday) was thus: We went up to the rapids above the Horse-shoe--say two miles from it--and through the great cloud of spray. Everything in the magnificent valley--buildings, forest, high banks, air, water, everything--was _made of rainbow_. Turner's most imaginative drawing in his finest day has nothing in it so ethereal, so gorgeous in fancy, so celestial. We said to one another (Dolby and I), "Let it for evermore remain so," and shut our eyes and came away. God bless you and all dear to you, my dear old Friend! I am ever your affectionate and loving. [Sidenote: Miss Dickens.] PORTLAND, _Sunday, March 29th, 1868._ I should have written to you by the last mail, but I really was too unwell to do it. The writing day was last Friday, when I ought to have left Boston for New Bedford (fifty-five miles) before eleven in the morning. But I was so exhausted that I could not be got up, and had to take my chance of an evening's train producing me in time to read, which it just did. With the return of snow, nine days ago, the "true American" (which had lulled) came back as bad as ever. I have coughed from two or three in the morning until five or six, and have been absolutely sleepless. I have had no appetite besides, and no taste. Last night here I took some laudanum, and it is the only thing that has done me good. But the life in this climate is so very hard. When I did manage to get from Boston to New Bedford, I read with my utmost force and vigour. Next morning, well or ill, I must turn out at seven to get back to Boston on my way here.