He speaks also suggestively of the possibility of that which is certainly now an established fact. He says: "In cases of diseased lungs, where no disease of the digestive organs is discovered, yet considerable _disorder_ does exist, and may continue for many years without any _organic_ disease being _apparent_; it is possible that such disorder may excite disease of the lungs, and thus produce a _severer_ disease of the latter organs than what existed in the former. Accurate attention to the _digestive organs may determine this important subject, and lead to the prevention and cure of the sympathetic diseases which I have mentioned_." "This attention must not be merely of that general kind which adverts only to the quality of the ingesta, &c., but one which more strictly observes whether the viscera" (that is, reader, not merely the stomach, not merely the digestive organs, but the whole viscera of the body) "and whether these secretions are healthy or otherwise." After speaking of the heart also, as affected by the digestive organs; and of the infinity of diseases which arise from the reciprocal disturbance excited between them and the brain;—he says: "But even these are not the worst consequences. The disorder of the sensorium, excited and aggravated (by the means which he has described), affects the mind. The operations of the intellect become enfeebled, perplexed, and perverted; the temper and disposition, irritable, unbenevolent, and desponding. The moral character and conduct appears even to be liable to be affected by these circumstances. The individual in this case is not the only sufferer, but the evil extends to his connections and to society. The subject, therefore, appears to me to be of such importance, that no apology need be offered for this imperfect attempt to place it under general contemplation." Here is that suggestion which, when carried out, leads to the detection of cases of insanity which depend on disturbances of the digestive organs. Lastly, as if, notwithstanding his own previous attention to the important question of the influence of the digestive organs in disease, he felt that the inquiry had grown upon him in consequence of Mr. Boodle's endeavour to concentrate his attention to the subject, he concludes by expressing his past obligations to Mr. Boodle; for he says, with admirable modesty and candour, "for Mr. Boodle first instructed me how to detect disorders of the digestive organs, _when their local symptoms were so trivial as to be unnoticed_ by the patient." He urges Mr. Boodle to publish also his own observations on the subject, because any remarks from one who observes the progress of disease "with such sagacity and accuracy, cannot but be interesting." We are quite aware how feeble our attempt has been to do justice to this admirable book. But nothing can do that but a careful study of the various principles which it either suggests, dimly shadows forth, or deeply and beautifully unfolds.