Hi!
Here's a dwarf flame cannon from Warhammer. Enjoy
A volatile concoction of hot oil and molten tar is mixed in the barrel of the Flame Cannon. Air is pumped into the barrel until the pressure inside is very great and the barrel is almost ready to burst. At precisely the right moment the Dwarfs place a burning oily wad into the nozzle and release the pressure inside. The mixture catches fire as it spurts from the barrel and burning oil arcs into the air towards the enemy ranks. With a bit of luck, the flaming oil lands right in the middle of an enemy unit, spraying fire and boiling tar over the target.
Here's the thread
http://forums.civfanatics.com/showthread.php?t=187214
Here's a dwarf flame cannon from Warhammer. Enjoy
A volatile concoction of hot oil and molten tar is mixed in the barrel of the Flame Cannon. Air is pumped into the barrel until the pressure inside is very great and the barrel is almost ready to burst. At precisely the right moment the Dwarfs place a burning oily wad into the nozzle and release the pressure inside. The mixture catches fire as it spurts from the barrel and burning oil arcs into the air towards the enemy ranks. With a bit of luck, the flaming oil lands right in the middle of an enemy unit, spraying fire and boiling tar over the target.
Here's the thread
http://forums.civfanatics.com/showthread.php?t=187214