In connection with this subject let me warn you of the existence of an army of "Opticians." These men are often swindlers of the first water. Their misrepresentations as to the money value of glasses amounts to grand larceny. They charge all the way from ten to seventy-five dollars for a pair of lenses that usually cost seventy-five cents each. There are honest men in the business, but beware of the grafter. There are many lesser lights engaged in the eye business, but the examples given above will serve to place you on your guard. Take no treatment by mail. Less can be done for the eye than any other organ of the body, unless it is the ear. Both are so complex in their anatomy and the symptoms so obscure that it is an impossibility to make a correct diagnosis without seeing the patient and using the best instruments that science can bring to the aid of the physician. CONSUMPTION CURES. A few years ago Dr. Koch, of Berlin, Germany, announced that he had discovered a cure for consumption. The same announcement has been made thousands of times before by more or less illustrious physicians. Dr. Koch's cure was a gas, requiring more or less elaborate apparatus. Several years' trial of this supposed cure convinced the medical profession, and Dr. Koch himself, that he was mistaken. He retracted his statements and acknowledged he had been in error. Yet in every large city of the country, Chicago, of course, included, there are established "Koch Institutes" for the cure of consumption. A more brazen fraud was never perpetrated on an ignorant public than the claims which these so-called institutes advertise. They are patronized chiefly by the poor--those who have been told by honest physicians that they are incurable. Having no means with which to take trips to the mountain or sea shore, they grasp at every quack medicine or institute that offers hope of recovery. I have visited the Chicago branch of this miserable fraud. Invalids who can scarcely walk are to be seen there daily inhaling mixtures of nauseous gases that have no more effect on the germ of consumption than a popgun on one of Uncle Sam's ironclads. By means of paid-for testimonials and a couple of "cappers," people from all parts of the country are brought here, oftentimes taking the last dollar of the family exchequer to pay for the so-called treatment. These frauds have been exposed time and again. However, a new crop of victims are gathered in every day and the game goes merrily on. HUMAN GHOULS. The human ghouls in the guise of doctors are meantime living in luxury, and fattening on the misfortunes of their already half-dead victims. You might ask why does not the law step in and protect the sick. If you had seen as much of the law as I have you would discover that it too frequently protects the doctors and not the patients.