Caterpillars –––––––– I saw a month or two ago in an Italian paper that the Villa Cascana, in which I once stayed, had been pulled down, and that a manufactory of some sort was in process of erection on its site. There is therefore no longer any reason for refraining from writing of those things which I myself saw (or imagined I saw) in a certain room and on a certain landing of the villa in question, nor from mentioning the circumstances which followed, which may or may not (according to the opinion of the reader) throw some light on or be somehow connected with this experience. The Villa Cascana was in all ways but one a perfectly delightful house, yet, if it were standing now, nothing in the world — I use the phrase in its literal sense — would induce me to set foot in it again, for