“That is true,” answered her companion. “I have seen them do it often. Both in the cavalry and in the artillery we depend far more upon the horses’ knowledge of the evolutions and the words of command, than upon that of the men. They learn tactics more readily than the men do, and, having once learned, they never make a mistake, while men often do.”

“How then can you doubt that horses understand words?”

“They understand words of command, but—”

“Yes? Well? ‘But’ what?”

“I really don’t know. The thought is so new to me that it seemed for the moment a misinterpretation of the facts—that there must be some other explanation.”

“But what other explanation can there be?”

“I don’t know. Indeed, I begin to see that there is no other possible. Animals certainly do understand some words. That is a fact, as you have shown me, and one already within my own knowledge. I see no reason to doubt that they understand many more than we are accustomed to think. I wish you would write that book about them.”

“I am writing it,” she answered; “but I don’t think I’ll ever let anybody see it—at any rate, not now—not for a long time to come—maybe not for ever.”

As she ended, the pair reached the invalids’ camp, and the wounded men gave Evelyn a greeting that astonished Kilgariff quite as much as it pleased him.

“The little lady! The little lady!” they shouted, while those of them who could walk eagerly gathered about her, with welcome in their eyes and voices.