in public and private libraries of Europe and this country, the finest collection of which is that of the National Museum of the University of Mexico. The reader is no doubt already familiar with the splendid fac-similes of several Mexican MSS. published in Lord Kingsborough’s work. Mr. Bancroft has concisely narrated the events and vicissitudes which have attended the transmission of some of these documents through the hands of successive owners to their present depositories.[617] Several writers on hieroglyphic systems, and the above author among them, have classified the progressive steps of picture-writing into _representative_, _symbolic_, and _phonetic_. Of these, the first is by far the simplest, and has invariably preceded the others in the development of the graphic art. It was natural for the savage to represent an object by a picture, in which that object was surrounded with certain conditions; at first the entire object was pictured, but subsequently only a portion of the object, as in the case of a bird, the head or foot or wing in the more advanced stages of art, would be substituted for the object itself. In symbolic picture-writing, we find an attempt at representing abstract ideas and actions. Some quality or attribute of a person is portrayed by means of the representative process, by symbols which would naturally seem to suggest the distinguishing characteristic of the person or occasion. A certain Aztec festival might be symbolized by the conventional calendar sign, an altar, a flint knife held by a human hand, and a smoking human heart. Phonetic picture-writing is, of course, dependent upon the sounds of the language for which it is designed. Its province is to represent those sounds by pictures of objects in whose names the sounds occur. Words, syllables and elementary sounds which are represented by alphabets, are thus gradually evolved in the progression which follows. Mr. Bancroft, by a most ingenious example, has illustrated this principle as applied to our own language. “According to this system,” he says, “the [left hand pointing up] signifies successively the word ‘hand,’ the syllable ‘hand’ in handsome, the sound ‘ha’ in happy, the aspiration ‘h’ in head, and finally, by simplifying its form or writing it rapidly, the [left hand pointing up] becomes [left hand pointing up outline] and then the ‘h’ of the alphabet.”[618] The Aztecs never reached the last stage of phonetic development, namely, the alphabet. They, however, employed the system in the syllabic formation of words to a very considerable extent. The priests soon found the natives applying their art of writing to the record of the standard expressions employed in teaching the new faith. Amen was expressed by the sign of water, _atl_ associated with a maguey plant, _metl_ which united gave the word _atl-metl_, or after the ever present Aztec termination _tl_ is stricken off, we have _a-me_, an approximation to our word Amen. Mr.