Most of the tribes were fairly proficient in pictography; totemic and other designs were inscribed on bark and wood, painted on skins, wrought into domestic wares, and sometimes carved on rocks. Jonathan Carver gives an example of picture-writing on a tree, in charcoal mixed with bear’s grease, designed to convey information from the "Chipe’ways" (Algonquian) to the "Naudowessies,"(22) and other instances of intertribal communication by means of pictography are on record. Personal decoration was common, and was largely symbolic; the face and body were painted in distinctive ways when going on the warpath, in organizing the hunt, in mourning the dead, in celebrating the victory, and in performing various ceremonials. Scarification and maiming were practiced by some of the tribes, always in a symbolic way. Among the Mandan and Hidatsa scars were produced in cruel ceremonials originally connected with war and hunting, and served as enduring witnesses of courage and fortitude. Symbolic tattooing was fairly common among the westernmost tribes. Eagle and other feathers were worn as insignia of rank and for other symbolic purposes, while bear claws and the scalps of enemies were worn as symbols of the chase and battle. Some of the tribes recorded current history by means of "winter counts" or calendaric inscriptions, though their arithmetic was meager and crude, and their calendar proper was limited to recognition of the year, lunation, and day—or, as among so many primitive people, the "snow," "dead moon," and "night,"—with no definite system of fitting lunations to the annual seasons. Most of the graphic records were perishable, and have long ago disappeared; but during recent decades several untutored tribesmen have executed vigorous drawings representing hunting scenes and conflicts with white soldiery, which have been preserved or reproduced. These crude essays in graphic art were the germ of writing, and indicate that, at the time of discovery, several Siouan tribes were near the gateway opening into the broader field of scriptorial culture. So far as it extends, the crude graphic symbolism betokens warlike habit and militant organization, which were doubtless measurably inimical to further progress.