3339. Because those auras correspond to the aura of odor present around people, therefore also odors [are auras], so I may mention that brute animals sense from auras things they would never otherwise be aware of. Thus there are auras in nature entirely unknown to us, but which obtain with beasts-such as dogs, who scent where their masters have put things, which they look for and find. A dog recognizes its master among thousands of people together, due to an aura of obedience and friendship, thus the aura of a happy home with him. Others it shuns, nor does it rest before it is standing at his feet. The phenomenon is ascribed to effluvia, but effluvia are only an attempted explanation of that aura. There is an aura by which animals know the quarters of the world, which humans do not at all know, as on by-paths and in forests, where they continually get lost,