"Roy! Oh, what a mustang! Whose is he?"

"Wal, Bo, if all I hear is so he belongs to you," replied Roy with a huge grin.

Bo appeared in the door. She stepped out upon the porch. She saw the cowboy. The excited flash of her pretty face vanished as she paled.

"Bo, I sh.o.r.e am glad to see you," drawled Las Vegas, as he stepped forward, sombrero in hand. Helen could not see any sign of confusion in him. But, indeed, she saw gladness. Then she expected to behold Bo run right into the cowboys's arms. It appeared, however, that she was doomed to disappointment.

"Tom, I'm glad to see you," she replied.

They shook hands as old friends.

"You're lookin' right fine," he said.

"Oh, I'm well.... And how have you been these six months?" she queried.

"Reckon I though it was longer," he drawled. "Wal, I'm pretty tip-top now, but I was laid up with heart trouble for a spell."

"Heart trouble?" she echoed, dubiously.

"Sh.o.r.e.... I ate too much over heah in New Mexico."

"It's no news to me--where your heart's located," laughed Bo. Then she ran off the porch to see the blue mustang. She walked round and round him, clasping her hands in sheer delight.

"Bo, he's a plumb dandy," said Roy. "Never seen a prettier hoss. He'll run like a streak. An' he's got good eyes. He'll be a pet some day. But I reckon he'll always be s.p.u.n.ky."

"Bo ventured to step closer, and at last got a hand on the mustang, and then another. She smoothed his quivering neck and called softly to him, until he submitted to her hold.

"What's his name?" she asked.

"Blue somethin' or other," replied Roy.

"Tom, has my new mustang a name?" asked Bo, turning to the cowboy.

"Sh.o.r.e."

"What then?"

"Wal, I named him Blue-Bo," answered Las Vegas, with a smile.

"Blue-Boy?"

"Nope. He's named after you. An' I chased him, roped him, broke him all myself."

"Very well. Blue-Bo he is, then.... And he's a wonderful darling horse.

Oh, Nell, just look at him.... Tom, I can't thank you enough."

"Reckon I don't want any thanks," drawled the cowboy. "But see heah, Bo, you sh.o.r.e got to live up to conditions before you ride him."

"What!" exclaimed Bo, who was startled by his slow, cool, meaning tone, of voice.

Helen delighted in looking at Las Vegas then. He had never appeared to better advantage. So cool, careless, and a.s.sured! He seemed master of a situation in which his terms must be accepted. Yet he might have been actuated by a cowboy motive beyond the power of Helen to divine.

"Bo Rayner," drawled Las Vegas, "thet blue mustang will be yours, an'

you can ride him--when you're MRS. TOM CARMICHAEL!"

Never had he spoken a softer, more drawling speech, nor gazed at Bo more mildly. Roy seemed thunderstruck. Helen endeavored heroically to restrain her delicious, bursting glee. Bo's wide eyes stared at her lover--darkened--dilated. Suddenly she left the mustang to confront the cowboy where he lounged on the porch steps.

"Do you mean that?" she cried.

"Sh.o.r.e do."

"Bah! It's only a magnificent bluff," she retorted. "You're only in fun.

It's your--your darned nerve!"

"Why, Bo," began Las Vegas, reproachfully. "You sh.o.r.e know I'm not the four-flusher kind. Never got away with a bluff in my life! An' I'm jest in daid earnest aboot this heah."

All the same, signs were not wanting in his mobile face that he was almost unable to restrain his mirth.

Helen realized then that Bo saw through the cowboy--that the ultimatum was only one of his tricks.

"It IS a bluff and I CALL you!" declared Bo, ringingly.

Las Vegas suddenly awoke to consequences. He essayed to speak, but she was so wonderful then, so white and blazing-eyed, that he was stricken mute.

"I'll ride Blue-Bo this afternoon," deliberately stated the girl.

Las Vegas had wit enough to grasp her meaning, and he seemed about to collapse.

"Very well, you can make me Mrs. Tom Carmichael to-day--this morning--just before dinner.... Go get a preacher to marry us--and make yourself look a more presentable bridegroom--UNLESS IT WAS ONLY A BLUFF!"

Her imperiousness changed as the tremendous portent of her words seemed to make Las Vegas a blank, stone image of a man. With a wild-rose color suffusing her face, she swiftly bent over him, kissed him, and flashed away into the house. Her laugh pealed back, and it thrilled Helen, so deep and strange was it for the wilful sister, so wild and merry and full of joy.

It was then that Roy Beeman recovered from his paralysis, to let out such a roar of mirth as to frighten the horses. Helen was laughing, and crying, too, but laughing mostly. Las Vegas Carmichael was a sight for the G.o.ds to behold. Bo's kiss had unclamped what had bound him. The sudden truth, undeniable, insupportable, glorious, made him a madman.

"Bluff--she called me--ride Blue-Bo saf'ternoon!" he raved, reaching wildly for Helen. "Mrs.--Tom--Carmichael--before dinner--preacher--presentable bridegroom!... Aw! I'm drunk again! I--who swore off forever!"

"No, Tom, you're just happy," said Helen.

Between her and Roy the cowboy was at length persuaded to accept the situation and to see his wonderful opportunity.

"Now--now, Miss Helen--what'd Bo mean by pre--presentable bridegroom?...

Presents? Lord, I'm clean busted flat!"

"She meant you must dress up in your best, of course," replied Helen.

"Where 'n earth will I get a preacher?... Show Down's forty miles....

Can't ride there in time.... Roy, I've gotta have a preacher.... Life or death deal fer me."

"Wal, old man, if you'll brace up I'll marry you to Bo," said Roy, with his glad grin.