I wish to invite your attention for a few minutes to some practical questions concerning certain aspects of cardiac pathology and therapeutics. These questions will be discussed with especial reference to my own experience. This experience, or at least that part of it which I have chosen as the basis of this discussion is perhaps sufficiently indicated by the title. It might be well, however, to add that the material among which cases of weakness and dilatation were found comprised about 600 cases of chronic gastritis, with about the same number of other forms of chronic diseases. These cases all occurred in private office and consultation practice. In all cases the heart was subjected to a careful examination with reference to the clinical changes of volume, either transient or permanent in character, which occur with varying states of tonicity of the cardiac muscle.
In perhaps no other department of practical