368 Memorias de la Sociedad Científica 



serioiis inconvenienco, invincible as yet, is the great distance 

 at which they are founded. This originates great difficulties 

 very easy to understand; such as copious expenses, journeys 

 longer and more dangerons, and tlie necessity o£ livingin re- 

 gions where society is fai' £rom having all the guáranteos 

 which a country such as México offers. 



Here in México we have the Hnes of comunication with 

 the principal Capitals of the U. S. A. and of Europe, easy, 

 safe, rapid andrelatively short. A joiirney of 4 or 6 days over 

 very comfortable rail-roads, suffices to place us in New York, 

 New Orleans, Quebec, Montreal, &. — Fifteen to twenty days 

 are enough in which to reach the greater number of the large 

 cities of Europe, with the same comfort and rapidity. More 

 is unnecessary to comprehend how much more easy to arrive 

 at a Sanatorium established near to México city. 



The Valley of México is not alone attractive for its splendid 

 climate, but also for its surpassing panoramas, its beautiful 

 vistas, the clearness, transparency and puriby of its azure at- 

 mosphere. 



It is well known, tnat in all high lands, the transparency 

 of the air, the luminous radiation and the sunsets of a thou- 

 sand tints, sets a Seal of singular enchantment upon theni, 

 which as always made the landscapes of switzerland from all 

 time especially famous. Besides the abundance of Hght not 

 alone bears the atractions which the illumination of any sce- 

 ne gives; but it also has the gi*eat advantage of redoubling the 

 killing — power of light upon the bacillus, on a much larger 

 scale. We already know perfectly well and we have treated 

 this subjectin especial articles and works — what are the means 

 which make the inhabitant of highlands iramune to phthisis 



Statistics have supplied authentic information as to the 

 enormous difference of consumptives in the cities of the Uni- 

 ted States and Eurpoe and the coasts of México, and the di- 

 minished number of consumptives in the cities of the higher 



