About four o’clock in the evening
Not to find an Indian where in general there were only too many , was so unusual that there must be some grave cause for it ; but worse still if Harry Grant were a prisoner in the hands of any of those tribes , had he been dragged away with them to the north or south ? Glenarvan felt that , cost what it might , they must not lose his track , and therefore decided to follow the advice of Thalcave , and go to the village of Tandil . They would find some one there to speak to , at all events . About four o'clock in the evening a hill , which seemed a mountain in so flat a country , was sighted in the distance . This was Sierra Tapalquem , at the foot of which the travelers camped that night . The passage in the morning over this sierra , was accomplished without the slightest difficulty ; after having crossed the Cordillera of the Andes , it was easy work to ascend the gentle heights of such a sierra as this . The horses scarcely slackened their speed .