imperceptible, but mighty beyond Bobby's small experience to gauge. He could make out the two bridge tenders walking around and around, pushing on the long lever that operated the mechanism. In a moment more the bridge came into alignment with a clang. The team, tossing their heads impatiently, moved forward.

On the other side of the bridge was no more town; but instead, great lumber yards, and along the river a string of mills with many smokestacks.

The road-bed at this point changed abruptly to sawdust, springy and odorous with the sweet new smell of pine that now perfumed all the air. To the left Bobby could see the shipyards and the skeleton of a vessel well under way. From it came the irregular Block! Block! Block! of mallets; and it swarmed with the little, black, ant-like figures of men.

Mr. Orde drove rapidly and silently between the shipyards and the rows and rows of lumber piles, arranged in streets and alleys like an untenanted city. Overhead ran tramways on which dwelt cars and great black and bay horses. The wild exultant shriek of the circular saw rang out. White plumes of steam shot up against the intense blue of the sky. Beyond the piles of lumber Bobby could make out the topmasts of more ships, from which floated the pointed hollow "tell-tales" affected by the lake schooners of those days as pennants. At the end of the lumber piles the road turned sharp to the right. It passed in turn the small building which Bobby knew to be another delightful office, and the huge cavernous mill with its shrieks and clangs, its blazing, winking eyes beneath and its long incline up which the dripping, sullen logs crept in unending procession to their final disposition. And then came the "booms" or pens, in which the logs floated like a patterned brown carpet. Men with pike poles were working there; and even at a distance Bobby caught the dip and rise, and the flash of white water as the rivermen ran here and there over the unstable footing.

Next were more lumber yards and more mills, for five miles or so, until at last they emerged into an open, flat country, divided by the old-fashioned snake fences; dotted with blackened stumps of the long-vanished forest; eaten by sloughs and bayous from the river. The sawdust ceased. Bobby leaned out to watch with fascinated interest the sand, divided by the tire, flowing back in a beautiful curved V to cover the wheel-rim.

As far as the eye could reach were marshes grown with wild rice and cat-tails. Occasionally one of these bayous would send an arm in to cross the road. Then Bobby was delighted, for that meant a float-bridge through the cracks of which the water spurted up in jets at each impact of the horses' hoofs. On either hand the bayou, but a plank's thickness below the level of the float-bridge, filmed with green weeds and the bright scum of water, not too stagnant, offered surprises to the watchful eye. One could see many mud-turtles floating lazily, feet outstretched in poise; and bullfrogs and little frogs; and, in the clear places, trim and self-sufficient mud hens. From the reeds at the edges flapped small green herons and thunder pumpers. And at last——

"Oh, look, papa!" cried Bobby excited and awed. "There's a snap'n' turtle!"

Indeed, there he was in plain sight, the boys' monster of the marshes, fully two feet in diameter, his rough shell streaming with long green grasses, his wicked black eyes staring, his hooked, powerful jaws set in a grim curve. If once those jaws clamped—so said the boys—nothing could loose them but the sound of thunder, not even cutting off the head.

Ten of the twelve miles to the booms had already been passed. The horses continued to step out freely, making nothing of the light fabric they drew after them. Duke, the white of his coat soiled and muddied by frequent and grateful plunges, loped alongside, his pink tongue hanging from one corner of his mouth, and a seraphic expression on his countenance. Occasionally he rolled his eyes up at his masters in sheer enjoyment of the expedition.

"Papa," asked Bobby suddenly, "what makes you have the booms so far away? Why don't you have them down by the bridge?"

Mr. Orde glanced down at his son. The boy looked very little and very childish, with his freckled, dull red cheeks, his dot of a nose, and his wide gray eyes. The man was about to make some stop-gap reply. He checked himself.

"It's this way Bobby," he explained carefully. "The logs are cut 'way up the river—ever so far—and then they float down the river. Now, everybody has logs in the river—Mr. Proctor and Mr. Heinzman and Mr. Welton and lots of people, and they're all mixed up together. When they get down to the mills where they are to be sawed up into boards, the logs belonging to the different owners have to be sorted out. Papa's company is paid by all the others to do the floating down stream and the sorting out. The sorting out is done in the booms; and we put the booms up stream from the mills because it is easier to float the logs, after they have been sorted, down the stream than to haul them back up the stream."

"What do you have them so far up the stream for?" asked Bobby.

"Because there's more room—the river widens out there."

Bobby said nothing for some time, and Mr. Orde confessed within himself a strong doubt as to whether or not the explanation had been understood.

"Papa," demanded Bobby, "I don't see how you tell your logs from Mr. Proctor's or Mr. Heinzman's or any of the rest of them."

Mr. Orde turned, extending his hand heartily to his astonished son.

"You're all right, Bobby!" said he. "Why, you see, each log is stamped on the end with a mark. Mr. Proctor's mark is one thing; and Mr. Heinzman's is another; and all the rest have different ones."

"I see," said Bobby.

The road now led them through a small grove of willows. Emerging thence they found themselves in full sight of the booms.

For fifty feet Bobby allowed his eyes to run over a scene already familiar and always of the greatest attraction to him. Then came what he called, after his Malory, the Stumps Perilous. Between them there was but just room to drive—in fact the delicate points of the whiffle tree scratched the polished surfaces of them on either hand. Bobby loved to imagine them as the mighty guardians of the land beyond, and he always held his breath until they had been passed in safety.

Shying gently toward each other, ears pricked toward the two obstacles, the horses shot through with pace undiminished and drew up proudly before the smallest of the group of buildings. Thence emerged a tall, spare, keen-eyed man in slouch hat, flannel shirt, shortened trousers and spiked boots.

"Hullo, Jim," said Mr. Orde.

"Hullo, Jack," said the other.

"Where's your chore boy to take the horses?"

"I'll rustle him," replied the River Boss.

Bobby drew a deep breath of pleasure, and looked about him.

From the land's edge extended a wide surface of logs. Near at hand little streaks of water lay between some of them, but at a short distance the prospect was brown and uniform, until far away a narrow flash of blue marked the open river. Here and there ran the confines of the various booms included in the monster main boom. These confines consisted of long heavy timbers floating on the water, and joined end to end by means of strong links. They were generally laid in pairs, and hewn on top, so that they constituted a network of floating sidewalks threading the expanse of saw-logs. At intervals they were anchored to bunches of piles driven deep, and bound at the top. An unbroken palisade of piles constituted the outer