So many strange things happened to the boys when up on Rattlesnake Mountain that it would be utterly impossible to even mention them here; but if you wish to know all about the mystery they solved, and the numerous other exciting events that befell them, you must get the second volume.
There was to be a special meeting, which the acting scout master had called for this evening; and Bobolink, Jack, and Tom Betts expected to be back from their errand in time to answer to their names when the roll was called.
It was only to oblige Jack that the other two had left home half an hour earlier than was really necessary. Jack had asked them, over the telephone, to drop around, as he had to go out to his father's mill before he could attend the meeting in the church, where a room in the basement had been kindly loaned to them by the trustees.
"What's all this mean about you going to the mill at this queer old hour?" Bobolink was saying, as the three boys continued to walk on abreast, the speaker carrying the silver-plated bugle which he knew how to manipulate so well when the occasion allowed its use.
"Why, you see it's this way," Jack went on to explain. "My father knows a man of the name of Professor Hackett, though what he's a professor of you needn't ask me, because I don't know. But he's a bright little gentleman, all right; and somehow or other he looks like he's just cram full of some secret that's trying to break out all over him."
Bobolink laughed aloud.
"Well, that's a funny description you give of the gentleman, I must say, Jack; but go on—what's he got to do with our making this trip to the big mill tonight?"
"I just guess it's got everything to do with it," replied the other. "You see, the professor had a number of big cases sent up here on the train, and they came today, and were taken to the mill; for my father promised to keep them there a couple of days until the owner could take them away. What under the sun's in those big boxes I couldn't tell you from Adam; all I know is that he seems to be mighty much afraid somebody's going to steal them."
"Wow! and are we going there to stand guard over the blooming old things?" exclaimed Bobolink in dismay; for he would not want to miss that special meeting for anything.
"Oh! not quite so bad as that," answered Jack, with a laugh. "But you see, that professor wrote my father that he wanted him to hire a trusty man who would stay in the mill over night until he could get up here from New York and take the boxes away, somewhere or other."