Our trip to Europe was made a few months after this, and was mainly on our son Herbert's account. He, poor fellow, was in great trouble, and so, therefore, were we. He had become engaged, with our full consent, to a young lady in our town, the daughter of a gentleman whom we esteemed very highly. Herbert was young to be engaged to be married, but as we felt that he would never find a girl to make him so good a wife, we were entirely satisfied, especially as it was agreed on all hands that the marriage was not to take place for some time. It seemed to us that, in marrying Janet Gilbert, Herbert would secure for himself, in the very beginning of his career, the most important element of a happy life. But suddenly, without any reason that seemed to us justifiable, Mr. Gilbert, the only surviving parent of Janet, broke off the match; and he and his daughter soon after left the town for a trip to the West. This blow nearly broke poor Herbert's heart. He gave up his professional studies and came home to us, and for a time we thought he would be seriously ill. Then we took him to Europe, and after a Continental tour of a month or two we left him, at his own request, in Goettingen, where he thought it would do him good to go to work again. Then we went down to the little town in Italy where my story first finds us. My wife had suffered much in mind and body on her son's account, and for this reason I was anxious that she should take outdoor exercise, and enjoy as much as possible the bracing air of the country. I had brought with me both my little machines. One was still in my knapsack, and the other I had fastened to the inside of an enormous family trunk. As one is obliged to pay for nearly every pound of his baggage on the Continent, this saved me a great deal of money. Everything heavy was packed into this great trunk--books, papers, the bronze, iron, and marble relics we had picked up, and all the articles that usually weigh down a tourist's baggage. I screwed up the negative-gravity apparatus until the trunk could be handled with great ease by an ordinary porter. I could have made it weigh nothing at all, but this, of course, I did not wish to do. The lightness of my baggage, however, had occasioned some comment, and I had overheard remarks which were not altogether complimentary about people travelling around with empty trunks; but this only amused me.