Beware of walking on grass. Though it may be dry to the touch, damp is ever present, and cold caught in this way is always difficult to cure. Avoid high roads in the country. They are, for the most part, unsheltered, and on hot days the sun beats upon them unmercifully. The perspiration that ensues is the beginning of many a troublesome illness. Country lanes are stuffy and unhealthy, owing to the sun not getting free ingress into them. They should, therefore, be avoided by all who value their health. In a magazine we observe an article extolling the pleasures of walking in a wood. That walking in a wood may be pleasant we do not deny, but for our own part we avoid woods. More draughty places could not well be imagined and many a person who has walked in a wood has had cause to repent it for the rest of his life. It is every doctor's experience that there is a large public which breaks down in health simply because it does not take sufficient exercise in the open air. Once more we would remind our readers that every man, woman or child who does not spend at least two hours daily in the open air is slowly committing suicide. How pitiful it is to hear a business man say, as business men so often say, "Really I cannot take a holiday this summer; my business ties me so to my desk, and, besides, I am feeling quite well. No, I shall send my wife and children to the seaside, and content myself with a Saturday-to-Monday now and again." We solemnly warn all such foolish persons that they are digging their own graves. Change is absolutely essential to health. Asked the other day why coughs were so prevalent in the autumn, we replied without hesitation, "Because during the past month or two so many persons have changed their beds." City people rush to the seaside in their thousands, and here is the result. A change of beds is dangerous to all, but perhaps chiefly to persons of middle age. We have so often warned the public of this that we can only add now, "If they continue to disregard our warning, their blood be on their own heads." This we say not in anger, but in sorrow. A case has come to our knowledge of a penny causing death. It had passed through the hands of a person suffering from infectious fever into those of a child, who got it as change from a shop. The child took the fever and died in about a fortnight. We would not have mentioned this case had we not known it to be but an instance of what is happening daily. Infection is frequently spread by money, and we would strongly urge no one to take change (especially coppers), from another without seeing it first dipped in warm water. Who can tell where the penny he gets in change from the newspaper-boy has come from?