When we learned by a private telegraph dispatch, a few days ago, that the Yankees had taken Huntsville, we attached no great importance to it. We regarded it merely as a dashing foray of a small party to destroy property, tear up the road, &c., _a la_ Morgan. When an additional telegram announced the Federal force there to be from 17,000 to 20,000, we were inclined to doubt--though coming from a perfectly honorable and upright gentleman, who would not be apt to seize upon a wild report to send here to his friends. The coming to that point with a large force, where they would be flanked on either side by our army, we regarded as a most stupid and unmilitary act. We now understand it all. They were to move upon Chattanooga and Knoxville as soon as the bridges were burnt, and press on into Virginia as far as possible, and take all our forces in that State in the rear. It was all the deepest laid scheme, and on the grandest scale, that ever emanated from the brains of any number of Yankees combined. It was one that was also entirely practicable on almost any day for the last year. There were but two miscalculations in the whole programme; they did not expect men to start out afoot to pursue them, and they did not expect these pursuers on foot to find Major Cooper's old "Yonah" standing there all ready fired up. Their calculations on every other point were dead certainties, and would have succeeded perfectly. This would have eclipsed anything Captain Morgan ever attempted. To think of a parcel of Federal soldiers, officers and privates, coming down into the heart of the Confederate States--for they were here in Atlanta and at Marietta--(some of them got on the train at Marietta that morning, and others were at Big Shanty;) of playing such a serious game on the State Road, which is under the control of our prompt, energetic and sagacious Governor, known as such all over America; to seize the passenger train on his road, right at Camp McDonald, where he has a number of Georgia regiments encamped, and run off with it; to burn the bridges on the same road, and to go safely through to the Federal lines--all this would have been a feather in the cap of the man or men who executed it.