I am exceedingly sorry, my dear old boy, that it is the doctor's advice that has made you fear to go. I hope the liability to relapse will soon fade out and leave you free again; for say what they will of _Alters Schwäche_ and resignation to decay, and _entbehren sollst du, sollst entbehren_, it means only sour grapes, and the insides of one always want to be doing the free and active things. However, a river can still be lively in a shrunken bed, and we must not pay too much attention to the difference of level. If you should summon me again this summer, I can probably respond. I shall be here for a fortnight, then back to Cambridge again for a short time. I thought the Agassiz celebration went off very nicely indeed, didn't you?--John Gray's part in it being of course the best. X---- was heavy, but respectable, and the heavy respectable _ought_ to be one ingredient in anything of the kind. But how well Shaler would have done that part of the job had he been there! Love to both of you! W. J. _To W. Cameron Forbes._ CHOCORUA, _June 11, 1907_. DEAR CAMERON FORBES,--Your letter from Baguio of the 18th of April touches me by its genuine friendliness, and is a tremendous temptation. Why am I not ten years younger? Even now I hesitate to say no, and the only reason why I don't say yes, with a roar, is that certain rather serious drawbacks in the way of health of late seem to make me unfit for the various activities which such a visit ought to carry in its train. I am afraid my program from now onwards ought to be sedentary. I ought to be getting out a book next winter. Last winter I could hardly do any walking, owing to a trouble with my heart. Does your invitation mean to include my wife? And have you a good crematory so that she might bring home my ashes in case of need?