When eight years ago my wife and my only son were taken away together, and I lay ill of the same fatal disease, he called at my house, and in spite of remonstrances found his way into the infected chamber. He would have taken me by the hand if I had allowed him; and then he sat a while by my bedside, consoling me with his sympathy and cheering me with the Christian hope. It is no wonder that this kindliness took the hearts of men captive; and this quality was, like mercy, "twice blessed; it blesseth him that gives, and him that takes." The feeling awakened in the minds of others by this kindliness was indeed a source of the purest pleasure to himself; trifling proofs of interest or love could easily move his thankfulness; and he richly enjoyed the appreciation of his scientific labours. This would often break forth in words. Thus in the middle of a letter to A. De la Rive, principally on scientific matters, he writes:-- "Do you remember one hot day, I cannot tell how many years ago, when I was hot and thirsty in Geneva, and you took me to your house in the town and gave me a glass of water and raspberry vinegar? That glass of drink is refreshing to me still." Again: "Tyndall, the sweetest reward of my work is the sympathy and good-will which it has caused to flow in upon me from all quarters of the world." But to estimate rightly this amiability of character, it must be distinctly remembered that it was not that superabundance of good-nature which renders some men incapable of holding their own, or rebuking what they know to be wrong. In proof of this his letters to the spiritualists might be quoted; but the following have not hitherto seen the light. They are addressed to two different parties whose inventions came officially before him. "You write 'private' on the outside of your official communication, and 'confidential' within. I will take care to respect these instructions as far as falls within my duty; but I can have nothing private or confidential _as regards the Trinity House_, which is my chief. Whatever opinion I send to them I must accompany with the papers you send me. If therefore you wish anything held back from them, send me another official answer, and I will return you the one I have, marked 'confidential.' Our correspondence is indeed likely to become a little irregular, because your papers have not come to me through the Trinity House. You will feel that I cannot communicate any opinion I may form to you: I am bound to the Trinity House, to whom I must communicate in confidence. I have no objection to your knowing my conclusions; but the _Trinity House_ is the fit judge of the use it may make of them, or the degree of confidence they may think they deserve, or the parties to whom they may choose to communicate them." By a foot-note it appears that the _private and confidential_ communication was returned to the writer, by desire, four days afterwards. "SIR,