Pennsylvanians are beginning to take more interest in the subject of tuberculosis. In a state in which about eight thousand persons, nearly all of them in the prime of life, die of this disease each year, it ought to receive much more attention from those who have it in their power to reduce this unnecessary sacrifice of life. The first and last systematic study of consumption in Pennsylvania was made by the late Dr. William Pepper and the writer in 1886 for the American Climatological Association and was published in the Transactions of that society. It developed the fact that there is a great inequality in the distribution of this disease throughout the state. There are seventy counties in Pennsylvania. Some of them are sparsely inhabited, are deeply wooded; the country is wild; the elevations range in the neighborhood of two thousand feet or over. The children "born and raised"