"The Autocrat" was followed by "The Professor at the Breakfast Table,"--a book in every way equal to the first one, though, to be sure, there are critics who pretend to see diminished power in the author's pen. It is, however, full of the same gentle humor and keen analyses of the follies and foibles of human kind. It is a trifle graver, though some of the characters belonging to "The Autocrat" come to the front again. It is in this book that we find that lovely story of Iris,--a masterpiece in itself and one of the sweetest things that has come to us for a hundred years, rivalling to a degree the delicious manner and style of Goldsmith and Lamb. In 1873 the last of the series appeared, and "The Poet" came upon the scene to gladden the breakfasters. Every chapter sparkles with originality. "I have," says Dr. Holmes, "unburdened myself in this book, and in some other pages, of what I was born to say. Many things that I have said in my riper days have been aching in my soul since I was a mere child. I say aching, because they conflicted with many of my inherited beliefs, or rather traditions. I did not know then that two strains of blood were striving in me for the mastery--two! twenty, perhaps, twenty thousand, for aught I know--but represented to me by two--paternal and maternal. But I do know this: I have struck a good many chords, first and last, in the consciousness of other people. I confess to a tender feeling for my little brood of thoughts. When they have been welcomed and praised, it has pleased me, and if at any time they have been rudely handled and despitefully treated, it has cost me a little worry. I don't despise reputation, and I should like to be remembered as having said something worth lasting well enough to last." There is much philosophy in "The Poet," and if it is less humorous than "The Autocrat," it is more profound than either of its fellows in the great trio. In it the doctor has said enough to make the reputations of half a dozen authors. "One Hundred Days in Europe," if written by anyone else save Dr. Holmes, would, perhaps, go begging for a publisher. But he journeyed to the old land with his heart upon his sleeve. He met nearly every man and woman worth knowing, and the Court, Science, and Literature received him with open arms. He had not seen England for half a century. Fifty years before, he was an obscure young man, studying medicine, and known by scarcely half a dozen persons. He returned in 1886, a man of world-wide fame, and every hand was stretched out to do him honor, and to pay him homage. Lord Houghton,--the famous breakfast giver of his time, certainly, the most successful since the princely Rogers,--had met him in Boston years before, and had begged him again and again to cross the ocean. Letters failing to move the poet, Houghton tried verse upon him, and sent these graceful lines:--