Father Le Moyne, while on a mission to the Onondagas in 1654, learned that the Iroquois confederacy were excited to fury against the Eries. A captive Onondaga chief is said to have been burnt at the stake after he had been offered, according to Indian custom, to one of the Erie women, to take the place of her brother who had been murdered while on a visit to the Senecas. It is a characteristic illustration of how the feuds of ages were perpetuated. The traditions of the Iroquois preserved little more than the fact that the Eries had perished by their fury. But a story told to Mr. Parkman by a Cayuga Indian, only too aptly illustrates the hideous ferocity of their assailants. It represented that the night after the great battle in which the Eries suffered their final defeat, the forest was lighted up with more than a thousand fires, at each of which an Erie was being tortured at the stake.[136] The number is probably exaggerated. But it is only thus, as it were in the lurid glare of its torturing fires, that we catch a glimpse of this old nation as it vanished from the scene. Of the survivors, the greater number were adopted, according to Indian fashion, into the Seneca nation. Some of the earthworks met with to the south of Lake Erie show proofs of greater constructive labour than anything found in Canada. Still more interesting are the primitive hieroglyphics of an inscription on Cunningham’s Island, ascribed to the Eries, and which Schoolcraft describes as by far the most elaborate work of its class hitherto found on the continent.[137] But the rock inscription, though highly interesting as an example of native symbolism and pictographic writing, throws no light on the history of its carvers; and of their language no memorial is recoverable, for they had ceased to exist before the great lake which perpetuates their name was known to the French.