Practical directions to gentlemen and tradesmen for keeping and managing horses : with the care required before and after a journey. The treatment of diseased horses ; and the causes, symptoms, and best modes of cure, of their several diseases. To which are prefixed, plain directions for the choice and purchase of horses, whether intended for saddle or harness ; how to ascertain the good qualities, and detect the faults, or carriage, gig, cart, and saddle horses /