NEW THEORY / JVtow Principles f NEW BOCTRINES Regarding the TREATMENT OF DISEASES- Can disease of any character whatever, exist without a cause ? Then does Medical Science consist in becoming familiar with all such causes! Is it the lungs, liver, kidneys, blood, bile or any fluid or solid of the system, that is diseased ? What are the true symp- toms by which each respective disease may be known ? Does Anatomy furnish this knowledge ? It assists us in our investigations, but cannot furnish the information requisite. Far greater knowledge is necessary for physicians, and which unfortunately for the cause of suffering humanity they have not hitherto- acquired. Do physician* know the chemical constituents of the fluids and the solids of the human body ? They do not 1 Do they know the changes to which animal matter under all circumstances can be subjected ? No ! Do they know how morbid matter originates in the system, its character and nature when there ? No !' Under such circumstances, how is it possible for a physician to prescribe either judiciously or correctly ? Must not all bis prescriptions be mere experiment, hap-hazard—like a blind man groping in the dark—all uncertainty and doubt ? He uses a medicine because somebody else has used it!—its modus operandi he is utterly ignorant of! He knows no other offset or .u-iio.. .. i.ivh |Ju/juk,c3 upuu iiic system, but that which is immediately visible. If it has other actions, and they are the most deleterious, he knows nothing about them ? Where is the difference between the quack and regular doctor? The quack knows his pills will act as a cathartic, and that is all the doctor knows about rhubarb, jalap, &c. This ignorance is the true came why disease is- treated with so little success by medical men—why they'have so many diseases— why they make a man sick to make him well—why they tear down the system to build it up again—why they doctor the constitution instead of the disease—why they treat symptoms instead of the pri- mary disease—why they try one medicine and then another, and another, with little good effect—why many of those medicines pro- duce good or evil effects which they did not expect or intend—and why they deem so many diseases incurable. The more fully to illustrate and explain these doctrines and principles Dr. J. C. KELLEY, Of New-York, will deliver a MEDICAL LECTURE, At the On; evening. At half-fct seven o’clock Ladies and Gentlemen are invited to attend. ADMISSION FREE/