This paper is limited in its terms to the presentation of the most important known pictographs of the American Indians, but examples from other parts of the world are added for comparison. The proper classification and correlation of the matter collected has required more labor and thought than is apparent. The scheme of the work has been to give in an arrangement of chapters and sections some examples with illustrations in connection with each heading in the classification. This plan has involved a large amount of cross reference, because in many cases a character or a group of characters could be considered with reference to a number of different characteristics, and it was necessary to choose under which one of the headings it should be presented, involving reference to that from the other divisions of the work. Sometimes the decision was determined by taste or judgment, and sometimes required by mechanical considerations. It may be mentioned that the limitation of the size of the present volume required that the space occupied by the text should be subordinated to the large amount of illustration. It is obvious that a work on picture-writing should be composed largely of pictures, and to allow room for them many pages of the present writer’s views have been omitted. Whatever may be the disadvantage of this omission it leaves to students of the work the opportunity to form their own judgments without bias. Indeed, this writer confesses that although he has examined and studied in their crude shape, as they went to the printer, all the illustrations and descriptions now presented, he expects that after the volume shall be delivered to him in printed form with its synoptic arrangement he will be better able than now to make appropriate remarks on its subject-matter. Therefore he anticipates that careful readers will judiciously correct errors in the details of the work which may have escaped him and that they will extend and expand what is yet limited and partial. It may be proper to note that when the writer’s observation has resulted in agreement with published authorities or contributors, the statements that could have been made on his own personal knowledge have been cited, when possible, from the printed or manuscript works of others. Quotation is still more requisite when there is disagreement with the authorities.