3i6 



THE POPULAR SCIENCE MONTHLY. 



■winter and summer. The springs furnish agreeable bathing, the cli- 

 mate is mild and stimulating ; it is so sheltered from the winds as to 

 be warm, even in winter, and socially it is attractive. The hot springs 

 at Las Vegas, New Mexico, combine the advantages of a good winter 

 climate, excellent hotel accommodations, and baths of natural hot 

 water. The temperature of these springs varies from 71° to 136° 

 Fahr., and they contain salts of soda and lime. We give tables show- 

 ing the constituents of these several waters : 



Denver itself makes a good winter resort, as it combines the com- 

 forts and attractions of a city with a dry, warm, and sunny climate. 

 But no directions can be given as regards the place that is best 

 suited to any individual case ; that should be determined by some com- 

 petent physician who would take into consideration the demands of 

 the case and the season of the year. In the summer it is well for the 

 invalid to go into the mountains, either camping out or going to some 

 of the resorts ; in the winter, let him do as the Indians did, come 

 down to the edge of the plains. 



The inclination to exercise to excess and to overdo is a tendency 

 which the phthisical invalid should guard against. The increased ac- 

 tivity of the heart, bearing in its train an increase of metamorjjhosis 

 and an exalted vitality, frequently leads the invalid to overrate his 

 strength and to exercise too violently. In this way irreparable injury 

 is not infrequently done. The exhilaration produced by the tonic air, 

 coupled with the restlessness incident to change of scene, often induce 

 patients, who should be resting and becoming acclimated, to take long 

 and exhausting walks, or to ride distances that Avould tax the energies 

 of a well man. It is difficult for most phthisical invalids to understand 

 that they are not as strong as they once were, and to teach them that 

 exercise does not mean exhausting effort. There is a wrong impres- 

 sion, common to this class, whick leads them to think that in order to 



