After this the Peloponnesians, finding that their engines effected nothing, and that their mound was met by the counter-work, concluded that their present means of offence were unequal to the taking of the city, and prepared for its circumvallation.
First, however, they determined to try the effects of fire and see whether they could not, with the help of a wind, burn the town as it was not a large one; indeed they thought of every possible expedient by which the place might be reduced without the expense of a blockade.
They accordingly brought faggots of brushwood and threw them from the mound, first into the space between it and the wall; and this soon becoming full from the number of hands at work, they next heaped the faggots up as far into the town as they could reach from the top, and then lighted the wood by setting fire to it with sulphur and pitch.
The consequence was a fire greater than any one had ever yet seen produced by human agency, though it could not of course be compared to the spontaneous conflagrations sometimes known to occur through the wind rubbing the branches of a mountain forest together.
And this fire was not only remarkable for its magnitude, but was also, at the end of so many perils, within an ace of proving fatal to the Plataeans; a great part of the town became entirely inaccessible, and had a wind blown upon it, in accordance with the hopes of the enemy, nothing could have saved them.
As it was, there is also a story of heavy rain and thunder having come on by which the fire was put out and the danger averted.