He went across to the cook-house, the Professor strolling in later. The Dude was induced to bring out his guitar, and accompany himself to one of the sentimental ditties of the Montana saloons, the Professor proving himself possessed of a remarkable ear for songs new to Stamford and not in the tenor of Smithsonian Institute circles. There were several mouth-organs among the outfit, and Bean Slade's high tenor was a not unpleasing addition to the part-singing. The Professor was so exuberantly delighted with the entertainment that he went to the door and whistled across to the ranch-house for his sister.

She came immediately, laughing her way into the group with the subtle touch of companionship that always breathed from her. Stamford immediately retired into his shell, resenting her frank friendliness with these rough fellows, resenting their half-shy acceptance of it, resenting more intensely Dakota's assumption that he represented the things she liked about them. Isabel looked at him under her brows two or three times, with a sly smile about her lips that did not add to his good humour. And presently, when she and Dakota were talking and laughing together, while the others went on with the desultory entertainment, Stamford rose to leave.

"Oh, Mr. Stamford," she called. "Don't leave the tenderfeet unprotected. We're going in a minute. I was almost forgetting Mrs. Aikens."

She smiled on Dakota and the others, and Dakota bowed low, hand on heart. In his enthusiasm he shook hands with the Bulkeleys, omitting Stamford. Bean's shy but inevitable "Ta-ta" was quite as full of gratitude, and Imp barked a farewell that, by his snuggling wriggles against Dakota's legs, was meant to say: "I appreciate the friendship of the ranch-house, but it mustn't presume to interfere with my real love."

"What fine fellows those chaps could be!" muttered the Professor, on the way to the ranch-house.

"They're that now," replied Stamford,—"except Dakota."

CHAPTER XVI
AN ADVENTURE IN THE MOONLIGHT

Stamford climbed into bed with a feeling of discomfort. He always knew beforehand when he would not sleep. Even as a youngster the aftermath of indigestible luxuries, nightmare, was heralded before he closed his eyes by a feeling of oppression. To-night he longed for Imp's watchful ears at the foot of his bed. Outside, the world was dominated by the hideous yelping of the coyotes. To Stamford they were a symbol of Red Deer mysteries: though hundreds of them by day lurked within the horizon, they were seldom visible; at night, when only their eyes could see, they filled the darkness with raucous clamour.

For a long time he struggled in vain to sleep, and at last put on his dressing-gown and seated himself before the window. The mosquitoes had retreated before the cool nights, though the sun still brought them to life in clouds by day. He removed the screen and leaned from the window. Beyond the shadow of the house the prairie was yellow now with a brilliant moonlight.