authentic information of a single wapiti remaining anywhere on the river in my neighborhood, although it is possible that one or two still lurked in some out-of-the-way recess. In Colorado at one time the bighorn was nearly exterminated, while the wapiti still withstood the havoc made among its huge herds; then followed a period in which the rapidity of destruction of the wapiti increased far beyond that of the bighorn. I mention these facts partly because they are of interest in themselves, but chiefly because they tend to explain the widely different opinions expressed by competent observers about what superficially seem to be similar facts. It cannot be too often repeated that allowance must be made for the individual variability in the traits and characters of animals of the same species, and especially of the same species under different circumstances and in different localities; and allowance must also be made for the variability of the individual factor in the observers themselves. Many seemingly contradictory observations of the habits of deer, wapiti, and prongbuck will be found in books by the best hunters. Take such questions as the keenness of sight of the deer as compared with the prongbuck, and of the pugnacity of the wapiti, both actual and relative, and a wide difference of opinion will be found in three such standard works as Dodge’s “The Hunting-grounds of the Great West,” Caton’s “Deer and Antelope of America,” and the contributions of Mr. Grinnell to the “Century Book of Sports.” Sometimes the difference will be in mere matters of opinion, as, for instance, in the belief as to the relative worth of the sport furnished by the chase of the different creatures; but sometimes there is a direct conflict of fact. Colonel Dodge, for instance, has put it upon record that the wapiti is an exceedingly gentle animal, less dangerous than a whitetail or blacktail buck in a close encounter, and that the bulls hardly ever fight among themselves. My own experience leads me to traverse in the most emphatic manner every one of these conclusions, and all hunters whom I have met feel exactly as I do; yet no one would question for a moment Colonel Dodge’s general competency as an observer. In the same way Mr. Grinnell has a high opinion of the deer’s keenness of sight. Judge Caton absolutely disagrees with him, and my own experience tends to agree with that of the Judge—at least to the extent of placing the deer’s vision far below that of the prongbuck and even that of the bighorn, and only on a par with that of the wapiti. Yet Mr. Grinnell is an unusually competent observer, whose opinion on any such subject is entitled to unqualified respect.