While the liveryman was preparing the grain Abe examined saddles and cinches. "Are your stirrups right?" he asked Holmes.

"I think so."

"You'd better know. We don't want to stop to monkey around in the dark."

The barn man grinned, with a wink at the surveyor, as the engineer decided, after trying, that he had better shorten the straps a hole. Abe silently assisted him in adjusting them. Then—swinging into his saddle—the surveyor said to his employer as the horses moved ahead: "Good-by, sir. Wire little sister that I'm coming."

Along the lighted city streets they rode at a pace that seemed to Willard Holmes more fitting for ladies' gentle exercise than for two men bound on an errand against time. The eastern man urged his horse ahead, but his companion held back and Holmes was forced to check his speed and wait for the other to come up with him. To the engineer's attempts at conversation the other answered only in monosyllables or not at all.

There had been no opportunity for Mr. Worth to explain to Abe the engineer's part in helping him to secure the money from Cartwright and the consequent discharge of Holmes by Greenfield. To the surveyor's mind his companion belonged to the enemy. He could not understand why—with the victory or defeat of Jefferson Worth in his fight with the Company hanging upon his superintendent's mission—the Company's chief engineer should volunteer to accompany him. The presence of Greenfield and Holmes in San Felipe, the action of the banks controlled by the Company, made it clear to Abe that they understood the dangerous situation of Mr. Worth and his urgent need of immediate relief. The Company had everything to gain if the arrival of the money at the scene of the strike could be delayed even for a few hours. But Abe had seen that it was Jefferson Worth's wish that Holmes go with him and the surveyor could not, in the presence of Holmes, discuss the question.

On his part Holmes felt the antagonism of his silent companion but could not guess the reason, while Abe's attitude of aloofness prevented the engineer from making any explanation. He told himself that the surveyor was naturally over-wrought with the mental and physical strain of his long ride, and that later, at some more opportune time, when they halted for lunch and rest perhaps, they would come to a more agreeable spirit of companionship.

But he could not content himself with the slow pace when there was such evident need of haste. It was all a mistake, he thought, for the man already wearied to undertake the return trip. A fresh rider was as necessary as a fresh horse. The surveyor was evidently too exhausted to push on at the necessary speed and Holmes felt that it fell upon him to set the pace and thus force his companion to the exertion required. So he continued urging his horse ahead while Abe's mount, held back by his rider, tugged at the reins and grew restless, and the horse of Holmes, now started sharply forward, now pulled down almost to a standstill, became equally uneasy. So they rode out of the city beyond the lights and movement of the streets into the stillness and the darkness of the night.

At last as Holmes again touched his horse with the spur, making him bound several lengths ahead, and again pulled him down waiting for Abe to overtake him, the western man broke the long silence. "You'll have to quit that, Mr. Holmes," he said somewhat sharply.

The engineer did not understand. "Quit what?"