In a few moments one of the riders raised his right hand above his head and moved it slowly to the right and left. White Otter instantly understood the signal, which meant, "I do not know you. Who are you?" Unwilling to proclaim himself until he knew more about the strangers, the young Sioux replied by repeating the question. Then the horseman who was conversing with him again raised his right hand, but this time be held it motionless. It was the sign for friendship. The second horseman waved his robe, and then spread it upon the ground. White Otter understood it as an invitation to come and talk with them. He began to hope that he was in communication with a company of his own people. Still he realized that he must take every precaution before exposing himself. Therefore, he answered the invitation by clasping his hands and raising them above his head, which meant, "Are you peaceful?" The horseman pledged himself by repeating the signal.

"My heart tells me that these people are Sioux," White Otter assured himself.

Then he again raised his right hand above his head, and swept it forward and downward to his side, which meant, "Come here." He watched eagerly while the horsemen seemed to be considering the invitation. At length one of the riders turned his pony down the ridge and rode toward White Otter. The latter saw that his invitation had been accepted, and he determined to be very cautious. When the horseman finally stopped, and signaled for White Otter to advance, the lad made no reply. He had no intention of placing himself one stride nearer the ridge until he knew the intentions of the strangers. As he showed no inclination to meet the horseman, therefore, the latter betrayed considerable impatience. After repeating the sign for friendship a number of times, and asking White Otter to meet him, he finally turned to rejoin his companion.

In the meantime White Otter had been studying him closely, and although he could not be sure at that distance he believed that the disgruntled warrior was a Sioux. Therefore, as the latter showed every intention of terminating the interview, White Otter made haste to pacify him. As the scout looked back to make sure that he was not followed, the young Sioux rode slowly forward.

The stranger instantly wheeled his pony and waited for White Otter to approach. The latter advanced with the alert, watchful caution of a fox. He made no attempt to conceal his suspicions, and to reassure him the unknown rider raised his hand in token of peace. Neither White Otter nor the warrior who awaited him had drawn their weapons, for to have done so under the circumstances would have been a grave breach of etiquette. However, White Otter stopped before he was within arrow-range, and looked searchingly at the man before him. He had all the characteristics of a Sioux, but the cautious lad determined to take nothing for granted. As he was now sufficiently near to open negotiations in the sign language, White Otter extended his right hand a short distance and turned the open palm slowly from right to left. Then he pointed toward the rider. The signs meant, "Who are you?"

The horseman replied by raising his right hand to the level of his shoulder, and drawing his flat palm swiftly across his throat, which was the sign for the great Sioux nation.

The announcement filled White Otter's heart with joy. Still he determined to demand further proof before venturing within arrow-range. He, too, made the sign for Sioux. Then he elevated his hands and brought the tips of his fingers together so that his palms formed the familiar outlines of a lodge or tepee, which was the sign for village. Then he repeated the signs for "Who are you?" Thus he demanded to know from what tribe or village the stranger had come.

The latter extended his clenched fists in front of him, and placed the right thumb upon the left thumb, twisting his hands to represent the motion for grinding corn. Then he opened his hands, and held them before him with the thumbs uppermost and the fingers pointing forward. He moved his hands by wrist action so that the fingers moved downward and to the front, and then raised them and moved his hands slightly to the right. These motions were repeated several times.

White Otter uttered an involuntary exclamation of delight, for he knew that the motions were the signs for Minneconjoux Sioux. Then as the rider was demanding an answer, White Otter pointed to the ground, brought his clenched right hand, with the back outward, in front of his face and snapped his fingers toward his eyes. It was the symbol for Ogalala Sioux.

Having convinced each other that there was no need for further caution, the two riders advanced. As they came within easy hailing distance the Minneconjoux scout raised his hand and called a greeting.