...r the Furnace as soon as Jackson's guns were heard. There was a point at the Furnace clearing where the moving troops of Jackson were seen by some of Sickles's skirmishers. This was reported to Sickles , and by him to General Hooker. A strong reconnoissance was made. Clark's battery, well supported, was put in position, and fired upon the Confederate column. This firing forced the enemy to aba...