It should be noted that this book will not help the patient either to diagnose his disease or to diagnose his disease or to estimate its seriousness. It is also clear that the patient will not be able to treat himself; nor should he attempt to do so. On the other hand, it will enable the patient to give the physician an intelligible account of his sensations, to follow the latter’s instructions properly and to organize his life in a manner that may contribute to the success of the treatment.