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96 otherwise his chances were small. Or again, a sick child would be held over a vessel of water, and his reflection carefully observed; if the image was dim there was small prospect of recovery. The last method of divination was employed when the sickness was supposed to be due to absence of the child's tonalli (which may be translated "soul" or "luck"), and constitutes another instance of the belief, so common throughout the world, that the incorporeal nature of man is closely connected with his reflection or shadow. Snakes were also used in divination, especially to discover a stolen object; the suspected persons were seated in a circle, and the magician placed a basket containing a snake in the middle. The basket was uncovered, and it was believed that if the culprit were present the snake would indicate the fact by crawling to him. Scrying in a mirror or bowl of water was another method of divination widely employed in Mexico proper, and was found among the Tarascans also. At Tlaxcala a peculiar custom was observed when war was declared in order to estimate the chances of ultimate success. Two sacred arrows were carefully kept in this town, which were supposed to have been brought by the first immigrants from Tulan. These were hurled in the direction of the foe by two specially chosen warriors, and then recovered at all costs. If an enemy was wounded by one the omens were regarded as especially favourable. At Mexico the Naualli was a magical priest of a high order; he was celibate, had been trained from youth in weather-wisdom and spent much of his time in fasting and purification. He was credited with special powers, such as the assumption at will of animal form, and levitation; he acted as the general guardian of the city against sorcerers, and gave warning of approaching famine or pestilence. The belief in powers such as these became extraordinarily widespread after the conquest, and resulted in the formation of a regular cult, the members