OATS—are the well-known farinaceous grain which is the principal food and support of horses in constant work. After various experiments by NATURALISTS, and the most celebrated AGRICULTURISTS, they are found to convey a greater portion of nutriment to the frame, and invigoration to the system, at less expence, than any other kind of food whatever. The advantages of obtaining the heaviest in weight, the brightest in colour, and the sweetest in hand, are too self-evident to require a single line in elucidation. Oats _newly_ housed, and _newly_ threshed, should be avoided, if possible: not having acquired their proper firmness by TIME, they are more disposed to _fermentation_ when mixed with the juices in the stomach, and then propel the contents of the intestines in a state little short of liquefaction, by their own laxative property. When, from any temporary scarcity, or local consumption, _old_ OATS _cannot_ be procured, and necessity compels the _use_ of _new_, a few beans may be added; these, by their restringent and nutritious property, will check the effect of the new oats, and prevent the debilitating laxity just described. OBERON—is a horse of some recent celebrity: he was bred by MR. HUTCHINSON, and foaled in 1790; he was got by _Highflyer_, dam (_Queen Mab_) by _Eclipse_, out of a TARTAR mare. In 1793, when three years old, he won the GOLD CUP at DONCASTER, value 100 guineas; beating _Cayenne_, _Ninety-three_, _Skypeeper_, _Restless_, _Flora_, and _Chigwell_. The same day he won the DONCASTER STAKES of 10 guineas each, thirteen subscribers; beating _Huby_, _Restless_, and _Yarico_. In 1794 he won at YORK, a subscription of 25 guineas each, seven subscribers; beating _Yarico_, _Huby_, and _Tantararara_. In the same week he won the great SUBSCRIPTION PURSE of 277_l._ 10_s._ 0_d._ beating _Patriot_, _Yarico_, _Young Diomed_, _Rosalie_, _Camphire_, and _Champion_. At MALTON he was beat in a sweepstakes of 20 guineas each, by Lord Fitzwilliam's _Evelina_, a three-year old by _Highflyer_, who carried but 5st. 10lb. to whom he ran _second_: the odds were very high in his favour at starting; and whether he sustained an injury is not publicly known, but he was then withdrawn from the turf. OFF-SIDE.—The _right_-side of a HORSE, if you stand parallel with him, and look the same way, is the OFF-SIDE; as the _left_ is the NEAR-SIDE. When speaking of any part of a horse, it is not usual, in sporting terms, to use the words right or left; but to say the _near_-shoulder; the _off_-eye; the _near_-leg BEFORE, or the _off_-leg behind.