Aconite has a specific and singularly marked action on the serous membranes and on the muscular tissues. We think of Aconite , therefore, when sudden inflammation, very violent in character, arises, and especially if it is caused by exposure to dry cold air, either in a dry cold room or by a draught of air, whereby perspiration or the insensible exhalations of the body are suddenly suppressed, and a violent chill is the consequence. In chronic cases, when the cause of the disease can be distinctly traced to such a source, even if years have intervened. Among chronic affections arising from this cause, are coughs, catarrhs, spitting of blood, pain in the chest, heart disease, etc., etc. Mental.-- The genius of this highly useful remedy is through the mental sphere, and it is always important to consider the mental symptoms. Almost certainly this remedy should never be given in cases where the sickness or suffering is borne with calmness and patience. On the contrary, if Aconite is to be even thought of, we will find mental uneasiness, worry , or fear , accompanying a most trivial ailment, such as inflammation of the eyelids. And the more thoroughly this state of the mind exists, the more surely will Aconite be indicated. Great and uncontrollable anguish, anxiety, and great fear, are characteristic of the Aconite disease. In nervous states with much fear, accompanied by weakness and want of appetite; great fear ; afraid to go out of the house; fear of a crowd; fear that he will not recover, and predicts the expected day of his death,--is very characteristic. Complaints caused by fright and the fear remains. It has much sensitive irritability, and sadness with fear. Fitful moods; now very cheerful and happy, singing, laughing, and talking in great glee; then sadness and fear, despondency and gloom. In the delirium is unhappiness, worry, despair and raving, with expression of fear upon the countenance; but there is rarely unconsciousness.