In presenting to the public the one hundredth edition of this work, it is a matter for profound gratification to be able to state that the treatment described in its pages has steadily increased in public favor since its introduction. Tens of thousands of grateful people testify to its efficiency, not only as a remedial process, but better still, as a preventive of disease. Truth must ever prevail, and this treatment being based on natural law (which is unerring), must achieve the desired result, which is the restoration and preservation of health.