"Oh, I'm not telling. Just you be ready directly after luncheon to go with me to Cambridge." "Cambridge! Oh, I know. It is the University, Mr. Cabot. It is Harvard!" exclaimed Giusippe, very proud of his knowledge. "Not quite," Mr. Cabot said, shaking his head, "although, being a Harvard man, I naturally feel that the equal of my Alma Mater cannot be found elsewhere. But you are on the right track. It is something which is out at Harvard. Guess again." "I don't know," confessed Giusippe. "Well, you may be excused because you have not been in this country long enough to be acquainted with all its marvels. But Jean should know. Where are you, young lady? You at least should be able to tell what treasures America possesses." "I am afraid I can't." "Then we must excuse you also; you are so young. I see plainly that we must appeal to Hannah. She who is ever extolling Boston can of course tell us what it is that Harvard University possesses which is unsurpassed in any other part of the world." Hannah looked chagrined. "You do not know?" went on Uncle Bob teasingly. "Oh, for shame! And you such an ardent Bostonian! Well, so far as I can see there is nothing for it but for me to take you all three to Cambridge as fast as ever we can get there. Such ignorance is deplorable." You may be very sure that during the ride out from the city every means was employed to get Uncle Bob to tell what particular wonder he was to display. At last, driven to desperation by Jean's persistent questions, he answered: "I will tell you just one fact. The things we are going to see are made of glass." "Glass! But we have already seen everything that ever could be made from glass, Uncle Bob," cried Jean in dismay. "No, we haven't." "Is it stained glass windows?" "No." "Mosaics?" "No." "A telescope?" "No." "What is it, Uncle Bob?" "Never you mind. You would never guess if you guessed a lifetime. You better give it up," was Mr. Cabot's smiling answer. Cambridge was soon reached, and after a walk through the College Yard that Giusippe might have a peep at Holworthy, where Uncle Bob had spent his student days, the sightseers entered a quiet old brick building and were led by Mr. Cabot into a room where stood case after case of blooming flowers. There were garden blossoms of every variety, wild flowers, tropical plants, all fresh and green as if growing. And yet they were not growing; instead they lay singly or in clusters, each bloom as perfect as if just cut from the stalk. "How beautiful! Oh, Uncle Bob, it is like a big greenhouse!" exclaimed Jean. "This is what I brought you to see." "But you said we were coming to see something made of glass," objected Giusippe. "You did say so, Uncle Bob." "Behold, even as I said!" "Bu-u-t, these flowers are not glass. What do you mean?" "On the contrary, my unbelieving friends, glass is precisely what they are made of. Every blossom, every leaf, every bud, every seed here is the work of an expert glass-maker."