Many volumes have been written by man about this, his best and second oldest friend among lower animals. His ancestry, his story as servant of man, his virtues, strength, speed, intelligence, his use for war and peace, his colour, varieties of breed and money value; his anatomy, physiology, pathology, his medicine and surgery have all been written by many able men. Indeed before the great revelation of what man can be and do that the great war has given us, many observers of mankind were prepared to adapt the saying of a French cynic and to declare: “The more I see of men the better I like horses.” Swift at any rate came near this in his bitter account of a voyage to the Houyhnhnms, which lasted sixteen years and seven months, towards the end of which he said: “For who can read of the virtues I have mentioned in the glorious Houyhnhnms without being ashamed of his own vices, when he considers himself as the reasoning governing animal of his country?” But in all these writings, even in that last striking book by Mr. Roger Pocock, _Horses_, little or no attention is given to the patterns of its coat from the point of view of science. I remember reading a paper on this subject many years ago before a distinguished company of veterinary surgeons, and though they had glanced at these patterns in a passing way, as peculiarities, no real knowledge of them nor attempt to understand them was shown by this body of experts. They were too “practical” for this view of things. I may remark here that many of the most vocal and active among us, and especially the Germans, have been overmuch disposed to study science _ad hoc_, for its commercial and military value, though here, as elsewhere one must be tolerant and each follow his own taste, seeking light, more light. One must live and let live. The horse does his work _coram publico_ in every street of every town, in fields, roads and race-courses, and displays on his hairy coat some graceful patterns which are at the same time subjects for scientific inquiry, and brands of his long servitude to man. I have examined many thousands of horses in some twenty years with never failing interest. Belonging to the large family of Equidæ, including _asses_, _zebras_ and _quaggas_, he is the most highly-developed of them all. His habits first, and then the most notable of his hair-patterns must now be considered. Some Habits of the Horse.