It is a great fact in the constitution of man, that whatever affects the body, affects the manifestations of intelligence, and conversely, whatever affects intelligence affects the body. The body is the harp of a thousand strings, manifesting its intelligence by different degrees of vibration. If either the musician or his instrument is out of order, the music will be discordant. It is not necessary for me to argue that a man must be in perfect health to exhibit perfect mentality. But as perfect health is the exception and not the rule, we rarely find mentality even approximating perfection. We are obliged, in our estimate of the character of men, to allow for various bodily infirmities, in a word, for the eccentricities of disease. These diseases may be inherited or acquired since birth; they may be acute or chronic in their stages; they may be mild or malignant in type; they may produce long, continued illness, terminating in death, or they may be only what we call a temporary indisposition, like that of the country boy, who went to Boston for the first time to see the sights. As he wandered around he became hungry, and, entering a restaurant began to experiment with strange dishes. He ate first a porterhouse steak, then some fried oysters, then a lobster salad, a lot of pickles, ice cream, cake and bologna sausage, drank a bottle of champagne and retired to his lodgings, and dreamed that he was lying on Boston Common, and that the devil was sitting on his stomach, holding Bunker Hill monument in his lap. If you eat an indigestible meal, you are unable to perform good brain-work after it. If you feed the body on material that will not nourish it, the brain refuses to work. If you are in the clutches of disease, we cannot expect of you a high measure of brain-power; in other words, the manifestations of the mind are weakened by the disorder of its instrument, the body. The phrenologist, therefore, who essays to read your character, must be able to trace the signs of disease in your appearance. He must needs be an expert Physiologist and Anatomist. He must understand Pathology. He must have the diagnosing skill to detect disease and allow for it in his estimate of your mentality, or his delineation is worth less than nothing; nay, more, he may do you a positive damage, by advising you to adopt a course of life which would be disastrous to your constitution. He must be able to do all this and do it rapidly and with precision. Never trust yourself under the hands of a professed phrenologist unless you are confident of his skill in estimating and diagnosing your physical condition. QUALITY.