accept novel views and suggestions. The doctrine of malaria, for example, so universally adopted by the profession, and which, in his writings, as in those of others, is made to account for so many, and so diverse, morbid phenomena, he seems never to have called in question; though variations of electrical tension, acting upon an organism animated and governed by an element of analogous or identical nature, would supply a more philosophical and satisfactory explanation.[1]
When Dr. Wood first entered upon his professional studies, the stethoscope and other mechanical aids to physical exploration and diagnosis had hardly yet been introduced; and as much application and experience are required to use them intelligently, he could, for many years afterwards, have had very little more than the general acquaintance with them which every physician is supposed to possess. But when he began to write and to teach, it was necessary that he should be perfectly familiar with the subject. This he could scarcely become from the limited opportunities afforded in private practice. The infirmary, where the various forms of disease are brought together, and facilities given for comparison and verification, was better adapted to his purpose. He accordingly sought an appointment in the Pennsylvania Hospital, and his works furnish abundant proof of the dexterity and confidence which he acquired in the use of the instrument; training his ear with remarkable accuracy and success to the detection and appreciation of sounds, natural and morbid. Though he was now approaching the meridian of life, he did not hesitate to become once more a learner; entering upon his task with his wonted earnestness and resolution; and mani-
- ↑ Transactions of the American Medical Association, 1866.
