The sky was overcast now, and only brief glimpses of the moon were seen, heat-lightening darted out of the dark clouds now and then, and a faint far-off rumble as of thunder told that a summer-storm was brewing. “ O my Robby! my Robby!” mourned poor Mrs. Jo, wandering up and down like a pale ghost, while Dan kept beside her like a faithful fire-fly. “What shall I say to Nan's father if she comes to harm? Why did I ever trust my darling so far away? Fritz, do you hear any thing?” and when a mournful, “No” came back, she wrung her hands so despairingly that Dan sprung down from Toby's back, tied the bridle to the bars, and said, in his decided way, “ They may have gone down the spring I'm going to look.” He was over the wall and away so fast that she could hardly follow him; but when sh

