means of defence. In this connection it is to be remembered, however, that the skunks belong to the family _Mustelidae_, which is characterized in part by the odoriferous secretions present in its various species, but, above all others, the odours emitted by the genera under consideration are the most dreadful. The stench produced by these animals when startled or enraged is not only horrible beyond description, but endures for months and even a year or more. The yellow liquid which is ejected is squirted in a fine spray for a distance of some 6 or 8 feet, but its odour may sometimes be perceived, even when the wind is still, for a distance of a quarter of a mile. The skunk having this one unconquerable means of defence from all its enemies except man, exhibits evidence of degeneration in other respects. When discharging its odoriferous fluid it faces its enemy, who is held at bay or retreats, and hence, not being compelled to run, has acquired a slow, wavering gait and deliberate movements; having no occasion to ascend trees for safety, it has lost or failed to develop the ability to climb; and its lack of other powers which are highly developed in its near of kin may be used in illustration in a similar way. It is practically removed from the attacks of enemies excepting dogs and other canines and some birds of prey, but has to adapt itself to conditions of climate and food supply. In winter in the northern portion of its habitat it becomes more or less torpid, and during the coldest weather usually hibernates, thus lessening the exertion required to procure sustenance. When the temperature is not excessively low it seeks its food, which consists of insects, birds' eggs, small reptiles, mice, etc., and in settled regions visits the poultry-yards, and thus increases the enmity extended to it by all mankind, who have ever been disgusted by its odours. Another objectionable fact in reference to this despised yet, we may perhaps say, respectfully treated animal, is that its bite sometimes produces hydrophobia.