But that is not the worst of it. The heart should rest and sleep when we do. During sleep, the character of the beats is different from what it is during our waking hours--the beats are made singly and deliberately, with a pause between, for the heart is taking its necessary rest, to fit it for its functions on the morrow; but, if we take alcohol into the system before retiring, then the heart works harder during sleep than a healthy man’s when he is awake. Is it any wonder that we hear of so many cases of heart failure? Is it strange that the average duration of human life is steadily and surely growing shorter? Three-score and ten was the average number of years for man to sojourn here, it is now thirty-eight, and will inevitably become still less if man persists in wilfully violating the laws that govern his being. Tea and coffee are substances which neither form tissue nor serve as fuel, and may be banished from the table with decided advantage. Few people realize that the difference between the drinking of alcohol and tea is simply a question of degree. It is true that the consequences of excessive tea drinking are not as severe as those from over-indulgence in ardent spirits, but the pernicious effects of the constant drinking of strong infusions of tea justify us in calling the practice a serious menace to health. Tea leaves contain from 2 to 4 per cent. of caffeine, or theine, which is an alkaloid, and always found in combination with tannin. They also contain a volatile oil, which is the source of the aroma, and in addition possess a sedative quality. Tannin is a powerful astringent, and hence is strongly provocative of constipation. Its action upon the mucous surface of the stomach is highly detrimental to that organ, as it arrests the excretion of the gastric juice by its contractile effect upon the glands. Its constant use will almost invariably result in digestive disturbances, and will certainly aggravate such troubles, if previously existing. It is true that a cup of hot tea is a refreshing beverage, but not more so than a cup of hot milk--in fact, it is the heat that imparts the sense of comfort experienced on drinking it. Children should never be allowed to drink either tea or coffee, as the seeds of a baneful habit may be sown, for in tea, as in dram drinking, it is a habit easily acquired.