As Japan is so long a country, she has every variety of climate. In the northern provinces, and especially on the northwest coast, it is extremely cold in winter, and snow falls in such quantities as practically to stop all kinds of business. In Formosa and Liukiu there is perpetual summer. That part of Japan in which the West is most interested, and about which it knows most,--which is far the most important portion of the empire,--has a mild, damp climate, free from great extremes of either heat or cold. Each winter snow falls frequently, but it is seldom known to lie on the ground for more than a few hours at a time. Cold frosts are rare. Judged by the thermometer, the summers are no warmer than those of the Carolinas or Tennessee, but their effect upon people of the West resident here is much more trying than the summers of those places. Various reasons are assigned for this. Physicians are well aware that humidity affects {20} health for good or bad as much as temperature. In considering the healthfulness of a climate, not only is the temperature to be taken into account, but the amount of moisture in the air must also be considered. Now, in Japan there is so excessive an amount of moisture in the atmosphere that it makes the heat exceedingly depressing. The presence of this dampness makes it very hard to keep things clean and free from rust and mold. Sewing-machines, bicycles, scissors, knives, and such things have to be watched carefully and oiled. Carpets, clothing, shoes, etc., have to be sunned well and then shut up in air-tight boxes during the summer season. Often a single night is sufficient to make a pair of shoes white with mold. Were it only on the machines and clothing that the dampness and mold settle, it would not be so bad; but we feel that this same clammy mold is going down into our very bones and marrow, gradually sapping their vigor and strength. Besides this great excess of moisture in the atmosphere, there are other reasons why the climate is so debilitating. One of these is the lack of ozone. This element is known to be one of the greatest atmospheric purifiers, and also to have a very invigorating and stimulating effect upon mind and body. The proportion of ozone in the atmosphere of Japan is only about one {21} third as great as that in the atmosphere of most Western countries. The proportion of electricity in the atmosphere is also thought to be much below the average. While not much is known in regard to the effect of atmospheric electricity upon the healthfulness of a country, it is generally believed by scientific and medical men that the proportion of electricity in the air has much to do with our physical well-being.