Voices from Stillman's Run:

From another source, on which reliance may be placed, we have learned the following particulars. The detachment concerned in the engagement (about 275 men) had been encamped at Dixon's Ferry for several days before the arrival of the main body of the Militia under the command of Gen. WHITESIDES. Immediately thereafter a request was preferred by Major STILMAN, who commanded the detachment, to be allowed to go out upon a scouting expedition; which was granted by Gen. W. On Monday, the 14th, the detachment met a small party of Indians, and killed two, and made two others prisoners. They continued their route, and encamped for the night in an advantageous position, --- a dense wood, surrounded by prairie. Almost as soon as they had dismounted, turned their horses loose and commenced preparations for supper, a small party of Indians were discovered in the neighborhood of the encampment, bearing with them a white flag. Captain EADES, with a few men, was sent out to meet them, when the Indians commenced a precipitate retreat. This officer being acquainted with the Indian mode of warfare, and suspecting an ambush, followed them as far as he deemed prudent, and then ordered his men to fall back upon the main party. Although it was nearly dark, the whole detachment had been ordered to re-mount, and were met upon the route by the men who were returning. The pursuit was conducted without any regard to discipline, and had continued for several miles, the Indians receding as the troops advanced, until they had decoyed them across Sycamore creek, as it is called in the proclamation. This they did in disorder, and as each man successively reached it. Being thus decoyed into the midst of the main body of Indians, and without being allowed time to form, hostilities were commenced. The Indians showed themselves on every quarter, mounted and armed. They commenced the attack with their guns, and after firing them resorted to the use of tomahawks and knives. As soon as their desperate situation was known, Maj. STILMAN ordered a retreat across the creek, after an ineffectual fire at the enemy. The savages followed close upon them. No time was allowed for them to form on the opposite bank of the creek. A company under the command of Captain ADAMS, of Tazewell county, who were in the rear, endeavored to make a stand against them and fought with desperation. About half of the missing are tho't to have belonged to this company. The battle was fought by moonlight, in an open prairie, and the pursuit was kept up for ten or twelve miles. The survivors began to arrive at Dixon's Ferry about one o'clock in the morning; and after a sufficient time had elapsed, the next day, for them all to have come in, the roll was called and fifty-two were found to be missing. A few of those who escaped were wounded, and many had their hats and clothes perforated with bullet holes. Some of the savages were killed, but the number could not be ascertained. Various estimates are given of the strength of the Indians: the number is probably between 12 and 1500 warriors. By this victory they obtained possession of the horses of the slain, and of the camp equipage, blankets, ammunition, and provisions of the routed Militia; and are, moreover, encouraged to further hostilities by the propitious omen of a first victory.

On Tuesday last, the Militia at Dixon's Ferry, amounting to 1200 men, were paraded, to bury their deceased comrades. When our informant left them, an immediate pursuit and attack of the Indians was anticipated; but we hope wiser counsels may have prevailed, as defeat would be almost certain to follow such a course.

The Militia are exasperated beyond all bounds at the death of their countrymen, and a cruel and exterminating war must be the consequence. On the other hand, the Indians have the advantage of a perfect knowledge of the country---are inured to fatigue and privations of every kind, and can at any time seek refuge in the swamps which abound in that quarter.

Fears were entertained at head quarters for the safety of two or three small parties of men, successively sent with despatches to Gen. ATKINSON. Nothing had been heard from any of them; nor, indeed, was it known in what situation Gen. A. was, when our informant left.

Prior to the engagement, the Regular army and the Militia had formed a junction at Rock Island, and Gen. ATKINSON was invested with the entire command. The Militia, under Gen. WHITESIDES, being mostly mounted men, proceeded to Dixon's Ferry by land. Gen. ATKINSON, with 300 Regulars and 300 Militia, ascended to the Rapids of Rock River in boats, and information received here from him, states, they had effected a passage over the Rapids. He must, at that time, have been about 15 miles from Dixon's Ferry.

It is said, that orders have been transmitted from the War Department to the commanding officer of the expedition, to prosecute the war in the most energetic manner, and no longer to listen to the Talks of the Indians---as has been too often done already.

The perilous state of our fellow citizens of Illinois, and the prospect of a continuance of the war for some months, suggest the propriety of assistance from this state. Having no organized militia (at least in this quarter) the only means left is the formation of Volunteer Companies. Arms and ammunition, and means of transportation to the scene of action, will, we have no doubt, be furnished by the Government offended. By timely aid, a like calamity on our own borders may be prevented; for it is easy to foresee, that if these Indians are not actually quelled, the same hostile spirit will soon be infused into all the border tribes.

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LATER. We have a counter, and less disastrous reports by a short steam boat passage from Galena. It was reported there by persons who were in the engagement that 25 or 27 men, only were killed. In the other particulars, the above details are nearly correct. Business was entirely suspended at Galena, and the families in the surrounding country were moving there for protection. As proof of the rapidity with which the Indians traverse the country, it is stated that a runner from Black Hawk and his allies, bearing to the Missouri bands, news of the defeat of the Militia, arrived at the Des Moines Rapids twenty-four hours before the express sent by Gov. Reynolds.