From forty disputatious _formicidae_, whining angrily at each other over the stinking remains of the monster Moran had killed, the number of ants involved in the quarrel became hundreds. But more and more arrived. The special caste of warriors bred for warfare was not numerous enough to take care of the provocative behavior of foreign foragers. There was a general mobilization in both unseen ant-city states. They became nations in arms. Their populations rushed to the scene of conflict. The burrows and dormitories and eating-chambers of the underground nations were swept clean of occupants. Only the nurseries retained a skeleton staff of nurses--the nurseries and the excavated palace occupied by the ant-queen and her staff of servants and administrators. All the resources of two populous ant-nations were flung into the fray. * * * * * From a space of a hundred yards or less, containing mere dozens of belligerent squabblers, the dirty-white ground of the fungus-plain became occupied by hundreds of snapping, biting combatants. They covered--they fought over--the half of an acre. There were contending battalions fighting as masses in the center, while wings of fighting creatures to right and left were less solidly arranged. But reinforcements poured out of the mist from two directions, and momently the situation changed. Presently the battle covered an acre. Groups of fresh fighters arriving from the city to the right uttered shrill stridulations and charged upon the flank of their enemies. Simultaneously, reinforcements from the city to the left flung themselves into the fighting-line near the center. Formations broke up. The battle disintegrated into an indefinite number of lesser combats; troops or regiments fighting together often moved ahead with an appearance of invincibility, but suddenly they broke and broke again until there was only a complete confusion of unorganized single combats in which the fighters rolled over and over, struggling ferociously with mandible and claw to destroy each other. Presently the battle raged over five acres. Ten. Thousands upon thousands of black, glistening, stinking creatures tore at each other in murderous ferocity. Whining, squealing battle-cries arose and almost drowned out the deeper notes of larger but invisible creatures off in the mist.