A highlander who purchased a barometer under a mistaken idea of its purpose, complained that he could not see that it had made any improvement in the weather; and those who use signs and evidences for an intent which they will never answer, will be sure to complain that their faith is not increased, though they are always practising self-examination. Yet a barometer has its uses, and so have evidences of grace. To feel the pulse is an admirable thing; the mistake is to put this in the place of strengthening food or tonic medicine.