“This won’t do at all,” said Rob; “we’ve got to go after those cows, even if it means the loss of a precious day.”

The straight trail leading to their usual feeding grounds was easily followed, but there little trails led about in all directions. To the west lay the deep Iron Creek marsh, a vast morass fully a mile wide, supposed to be impassible except in the driest seasons. Really, it was a sluggish, scarcely-moving, shallow river, overgrown with rushes and coarse grass, through which water moved slowly along, down from the great north country.

This had always acted as an effective barrier to the westward-roving of the cattle, and to the north lay the big woods, with their scanty growth of grass. Until late in the afternoon the boys hunted off towards the south, circling around this low-lying island, climbing a tree on that, in hopes of discovering the bunch resting somewhere, hidden away. Disheartened at last, they turned their faces homeward.

Shortly after noon Mrs. Allen heard a great lowing of cows, accompanied with bleating of frantic calves, and going to the north door had seen the cows coming in on a run, the milk trickling in little streams from their udders—full almost to bursting. Indeed it was now great concern those mothers were feeling for their offspring. She wisely let down the bars, and it was not long before the misery of over-fulness was transferred from the cows to the calves.

The return of the cows presented puzzling aspects to the boys, but there was another mystery to be solved, which was not able to be cleared up until later.

“See the cows’ legs!” exclaimed Rob. “They’ve found another berry patch.” Several times during those June days the cattle had returned home with shanks dyed red from crushing the long-stemmed wild strawberries, which grew in great profusion in patches on the higher portions of the marsh.

“Strawberries never stained that high up,” answered Ed, going over to the cattle. “Maybe the mosquitoes have been at them again. See, their udders even are all red, and the calves have rubbed it all over their heads too.” Ed’s supposition was a reasonable one, for not infrequently the insects had appeared in the marshes in such swarms as to drive the cattle in to dark shelter of the stables, even in day time, the poor beasts coming in frantic and all bloody from the attack of these pests. But this time the color was not the stain of strawberries, nor that of blood drawn by insects.

“Come here, look at this, Rob,” called Ed as he held up his hand all red, where he had passed it over the belly of Old Spot. “Some one has painted our cows! This is nothing else than red paint.” A quick examination showed that the entire bunch had received the same treatment—a thick, bright red plaster covered all their legs and the under parts of the body.

Who had done such a thing, and why? The thought of their Indian neighbors flashed into the minds of both boys; they had paint like that with which in some of their ceremonial dances they smeared themselves. Had they held the cows overnight and painted them up this way? If so, what could have been the motive?

Had Mr. Allen been at home he might have ventured a shrewder guess as to the nature of the material with which the cows had been decorated, but he, too, would have lacked the revelation of the secret which came to the boys a little later.