civilization having early foundations and of considerable achievement and complexity, the religious aspect of which had arrived at a high state of development.3 Evidences of the archaic character of this faith are rapidly accumulating, but many years must yet be dedicated to the examination and comparison of the data concerning it before it is possible to speak with any degree of certainty regarding the causes which contributed to its formation and evolution.
Although we must necessarily regard Mexican religion as having had a progressive history spread over many generations, we are at present almost ignorant of the gradual changes which accompanied its growth. An effort will be made to outline the probable nature of these mutations, but the endeavour will not receive any great measure of assistance from the abundant but chaotic and unclassified material amassed by Americanists during the last twenty years, which in its present condition is not of much value as regards this particular branch of the subject, but which it is the writer’s intention to employ, so far as it is capable of illustrating the question before us.