Likewise, in a cure effected in the case of a sick lad of the Wallawalla Indians, Columbia river, which Mr. Drayton witnessed, there appears to have been a kind of mesmerism used in combination with music. This case is also noteworthy inasmuch as it shows that the Indians have female physicians. The lad was lying on his back in a lodge and appeared to be in a dying state. Over him stood an old haggard-looking squaw, who was singing in great excitement, while about a dozen men and boys were accompanying her with their voices in a sort of chorus, the rhythmical effect of which they increased by striking sticks together at regular intervals. The music thus produced sounded unearthly to the foreign bystander. The squaw was all the time very busy about the lad, now bending over him and making all kinds of grimaces, and now baring his chest and pretending by her actions to be scooping out his disease, and now again falling on her knees before him and striving to draw out the evil spirit with both her hands. She blew into her hands and then moved them over the patient in a peculiar manner as if she were tossing the noxious spirit away into the air. Then again she would blow with her mouth on his neck downwards, making a quick sputtering noise; and at last she began to suck his neck and chest in different parts. Whatever may be thought of this operation, the boy certainly soon got better. Moreover, our informant concludes his account of the occurrence with the statement: "One singular custom prevailing here (with the Indians of Wallawalla) is that all the convalescents are directed to sing for several hours during the day."[45] The Indian tribes in Guiana have mystery-men, called Piatzas, or Piaies, who constitute a powerful priesthood. In their incantations they use rattles, and also drums and bells. When a person suffering from a protracted illness finds the commonly-used medicines of no avail, his refuge is to the Piatza, to induce him to drive out the evil spirit that must be the cause of the mischief. The Piatza carries the patient into the nearest forest, and having fastened his hammock to some tree across a pass, he commences the incantations, which he accompanies with the noise of his rattle. The rattle consists of a calabash partly filled with small pebbles. During his incantations no one is permitted to witness what he is doing, even the patient being enjoined to close his eyes and to keep them shut until the end of the ceremony. The Piatza draws a circle round the sick person and addresses the evil spirit.[46]