Investigations into the Effect of Hot, Dry Microclimate on Peripheral Circulation, etc., in Arthritic Patients.

During the last six years one of the wards of the University Hospital in Lund has been used as a climatic laboratory. The temperature of the air in the room can be adjusted between what is normal outdoor temperature in south Sweden-in the winter below zero-and 400 C., the relative humidity between 30 per cent. and complete saturation, and both these factors can be kept constant at the level desired with a very small range of variation.