On the Sabbath, the saloon usually occupied as a dancing room, was consecrated to more hallowed purposes. At the call of the bell, a large and very respectable congregation assembled, and listened to a solemn and eloquent discourse from the Rev. Doct. Johns of Baltimore. It seemed peculiarly appropriate, that while resorting to these waters for healing the diseases of the body, we should also have recourse to the wells of salvation which have been opened in the house of David for the diseases of the soul. The grace and elegance with which the speaker on this occasion presented the truths connected with his office, was calculated to render them interesting, as well as to convey a sense of their importance even to the most indifferent. It would be perhaps superfluous to speak of the healing efficacy of this celebrated spring; its renovating effects are annually exhibited, and have been for years. It has been, however, a matter of regret, that so little has been certainly known, as to the peculiar properties of this as well as the other mineral springs of Virginia, and of their application to different diseases. It is a lamentable fact that invalids, by resorting to one of the springs which was not at all suited to their case, have only aggravated their diseases, and hurried themselves more rapidly to the grave. No impression is perhaps more common and none more erroneous, than that if the use of a particular spring is efficacious in one complaint, it will be equally beneficial in others, no matter how different their nature, and that at all events if no good is gained, no positive injury is received. The very opposite of this is the fact. Unless there is a clear understanding of the pathology of the disease, and of the properties of the water, as well as the adaptation of its constituents to remove the malady in view, we are for the most part groping in the dark, and playing at best but a hazardous game. The want of a mineral water suited to the case of invalids, need however deter no one from visiting the Virginia Springs. Providence has supplied in this region a variety sufficient to answer the necessities of almost any case. The only difficulty is, to ascertain which of these watering places is adapted to the particular disease.