310 THE SEASONS CLIMATE AND HEALTH 



equally beneficial as a preventive measure. Well informed 

 people have become convinced of this fact and many modern 

 houses are being constructed with open-air living rooms, with 

 sun rooms, and with open-air sleeping rooms. 



It is usually an inexpensive matter to construct a sleeping 

 porch such as shown in Fig. 228. Many houses have porches 

 which may be easily screened in for living purposes. 



Many devices have been perfected, especially for the accom- 

 modation of tubercular patients who can not afford to build 

 sleeping porches or who live in rented houses. Most of these 

 devices are fitted to the open window in such a manner as to 

 permit the patient to breathe the cool, fresh, outside air while 

 resting and sleeping. Figures 229 and 230 show two views of 

 one of these devices, first, when in use, and second, when folded 

 up out of the way. This window tent has a celluloid window 

 which enables the patient to see all that takes place in the 

 room. Such devices are very useful for several reasons: (1) 

 They are easily attached to, and removed from any window; 

 (2) they are economical because they prevent the loss of any 

 considerable amount of heat from the room; (3) in case of 

 severe sickness, the attending nurse and the members of the 

 patient's family are able to use the room with comfort even 

 in the severest weather; at the same time the patient really 

 lives in outside air. 



