"Well, now, Masa Tom, I shorely would laik t' 'blige yo', I shore would. But de fack ob de mattah am dat I has a mos' particular job ob white washin' t' do dish mornin', an' I 'spects I'd better be gittin' at it. It's a mos' particular job, an', only fo' dat, I'd be mos' pleased t' go up in de airship. But as it am, I mus' ax yo' t' 'scuse me, I really mus'," and the colored man shuffled off at a faster gait than he was in the habit of using. "Well, of all things!" gasped Tom. "I believe you're all afraid of the old airship, just because I made some changes in her. I'll go up alone, that's what I will." "No, I'll go with you," interposed Ned Newton who was Tom's most particular chum. "I only wanted to be sure it was all right, that was all." "Well, if you've fully made up your mind," went on the young inventor, a little mollified, "lend me a hand to get her in shape for a run. I expect to make faster time than I ever did before, and I'm going to head out Waterford way. You'd better come along, Mr. Damon, and I'll drop you off at your house." "Bless my feather bed!" gasped the man. "Drop me off! I like that, Tom Swift!" "Oh, I didn't mean it exactly that way," laughed Tom. "But will you come." "No, thanks, I'm going home by trolley," and then as the odd man went in the house to speak to Tom's father, the two lads busied themselves about the airship. This was a large aeroplane, one of the largest Tom Swift had ever constructed, and he was a lad who had invented many kinds of machinery besides crafts for navigating the upper regions. It was not as large as his combined aeroplane and dirigible balloon of which I have told you in other books, but it was of sufficient size to carry three persons besides other weight. Tom had built it some years before, and it had seemed good enough then. Later he constructed some of different models, besides the big combination affair, and he had gone on several trips in that. He and his chum Ned, together with Eradicate Sampson, the colored man, and Mr. Damon, had been to a wonderful underground city of gold in Mexico, and it was soon after their return from this perilous trip that Tom had begun the work of changing his old aeroplane into a speedier craft. This had occupied him most of the Winter, and now that Spring had come he had a chance to try what a re-built motor, changed propellers, and different wing tips would do for the machine. The time had come for the test and, as we have seen, Tom had some difficulty in persuading anyone to go along with him! But Ned finally got over his feeling of nervousness. "Understand, Tom," spoke Ned, "it isn't because I don't think you know how to work an aeroplane that I hesitated. I've been up in the air with you enough times to know that you're there with the goods, but I don't believe even you know what this machine is going to do." "I can pretty nearly tell. I'm sure my theory is right." "I don't doubt that. But will it work out in practice?"