Man is a great deal more careful of the quadruped world than the class he belongs to himself. He will stint his horse drink, who works as much beyond his strength as man does under his own, while he, the driver, will swill till his mouth can scarcely receive another drop. The moral of a volume might doubtlessly be expressed in very few words, but then it would not be a volume, and, consequently, would not be purchased or read; therefore, the proposition herein intended to be presented to the reader would exist unheeded. It is one thing to observe, that we all drink too much, or that too much fluids are hurtful to digestion and other functions, the public require some illustration (which their own reflection would furnish, if they used it), and hence this expense of verbosity to prove the fact. As one of the consequences, then, of too great an indulgence in fluids (I am here speaking of quantity rather than quality), this form of complaint, wherein the patient is perpetually desiring to urinate, is decidedly the result; and, as all complaints have a beginning, this may be considered as the first step toward setting up the several affections of the kidneys and bladder hereafter treated upon. How important, then, is the arrest of this practice. Where the inconvenience thus detailed is present, the quantity of fluids must by degrees be diminished, the general state of health must be studied. Dieting and warm-bathing are two sheet-anchors, if properly applied. All remedies tending to afford strength to the urinary system must be had recourse to; and where the bladder loses any of its retentive power, I entertain the greatest benefit from an injection. The next form of urinary disturbance of a proximate nature to the one just described, is also where the urine is discharged in large quantities; but, unlike the former, excreted in greater abundance than the supply. The character of the fluid is also different; it assumes two appearances, modifications doubtlessly owing to the constitution of the patient and the severity and length of the disease. It is known by the name of diabetes: it is happily a complaint the least frequent of urinary derangements, else, from its obstinacy and difficult management, the slightest urinary disorder would excite much just dread and apprehension.