The Castle grounds are very ample and very beautiful; and as they joined the Hotel grounds, with no fences to climb, but only some nobly shaded stone stairways to descend, we spent a part of nearly every day in idling through their smooth walks and leafy groves. There was an attractive spot among the trees where were a great many wooden tables and benches; and there one could sit in the shade and pretend to sip at his foamy beaker of beer while he inspected the crowd. I say pretend, because I only pretended to sip, without really sipping. That is the polite way; but when you are ready to go, you empty the beaker at a draught. There was a brass band, and it furnished excellent music every afternoon. Sometimes so many people came that every seat was occupied, every table filled. And never a rough in the assemblage--all nicely dressed fathers and mothers, young gentlemen and ladies and children; and plenty of university students and glittering officers; with here and there a gray professor, or a peaceful old lady with her knitting; and always a sprinkling of gawky foreigners. Everybody had his glass of beer before him, or his cup of coffee, or his bottle of wine, or his hot cutlet and potatoes; young ladies chatted, or fanned themselves, or wrought at their crocheting or embroidering; the students fed sugar to their dogs, or discussed duels, or illustrated new fencing tricks with their little canes; and everywhere was comfort and enjoyment, and everywhere peace and good-will to men. The trees were jubilant with birds, and the paths with rollicking children. One could have a seat in that place and plenty of music, any afternoon, for about eight cents, or a family ticket for the season for two dollars. For a change, when you wanted one, you could stroll to the Castle, and burrow among its dungeons, or climb about its ruined towers, or visit its interior shows--the great Heidelberg Tun, for instance. Everybody has heard of the great Heidelberg Tun, and most people have seen it, no doubt. It is a wine-cask as big as a cottage, and some traditions say it holds eighteen thousand bottles, and other traditions say it holds eighteen hundred million barrels. I think it likely that one of these statements is a mistake, and the other is a lie. However, the mere matter of capacity is a thing of no sort of consequence, since the cask is empty, and indeed has always been empty, history says. An empty cask the size of a cathedral could excite but little emotion in me.