Dr. Gray’s next pet was a very small puppy; so small that for the first few months Dr. Gray would drop him into his pocket when calling on certain friends. He was said to be a Japanese terrier, and grew to be a great beauty, with long, white, curling hair (with some black markings) to the tips of his ears and toes, and a tail like a plume, curling over his back, all so fluffy he was given the name of Puff. Dr. Gray always called him a “little pagan dog,” because, he said, his conscience was so unequally developed. But though willful and obstinate, with great self-sufficiency, he was very attractive. It was a piece of his mischief as a puppy that called out the following letter from his master to Rev. G. F. Wright. TO G. FREDERICK WRIGHT. CAMBRIDGE, December 11, 1878. REV. SIR,--Will you be so good as to accept a puppy’s penitent apologies for his naughtiness, and a new pair of rubbers in place of those which I wickedly destroyed, because it was “my nature to” at the time you last visited my master. I wish you to know that I am as sorry for it as I am capable of being, that I have been punished as well as scolded, and that the cost of the rubbers has been stopped out of my allowance. So no more at present from your disobedient, JAP. PUFF. Dr. Gray’s last dog was a beautiful spaniel, and had the same devoted love for him. He was very courteous and polite, and gentle and affectionate. He needed a great deal of outdoor exercise, and was so disconsolate and miserable at his master’s illness, that he was sent to kind friends, where he still keeps a warm and loving greeting for his old mistress. TO R. W. CHURCH. CAMBRIDGE, December 26, 1877. Did I dispatch a line to you on or about October 1st,--one which would have crossed your last to me? If I did not, it shows how a continual and fixed intention works a sense of performance. I took with me, on our travels, your letter of June 20, expecting to write you from the Rocky Mountains or some far-away Pacific region. But never were such busy people as Hooker and I the whole time. In fact, I was bound to make Hooker see just as much as possible within our limited time, and it seemed on the whole best for us to see very much in glimpses and snatches rather than far less more leisurely and thoroughly. He will have told you of our over nine thousand miles of travel together, and of how he liked it. I think Mrs. Gray and I enjoyed it most, and that we have a particular fancy for hurry-skurry journeying. We should like to do it all over, and more. But especially we should like to see California, in green attire. Not that we are not interested and taken with the sere aspect of these western regions in summer, which we fancy more than Hooker does. In fact, the greenness of England is so congenial to him that he took more delight in our eastern States, which he had mere glimpses of, than in all the wide western region, though of course there was more to learn in these.