431 



mail's environment to sneli an extent that he couhl no longer llonrish. 

 ^lalaria literally means bad air, but In the case of malarial fever we know 

 that this Is really not Irne. IJegardiiig the air eonditioiis of our cities we 

 can properly speak of mal-aria. We can even speculate to what extent 

 bad air is a factor In destroying our own civilization, shall we say by 

 killing off the desirable and leaving the city to the undesirable V 



Tuberculosis: This is the great Indoor air disease which is actively 

 weeding out those imt adapted to city life or to life indoors under bad 

 air. Individuals whose ancestors liave long been exposed to the ravages 

 of tuberculosis are largely immune, succumbing only when conditions are 

 unusually bad or prolonged. It is well known that the descendants of 

 European ghetto Jews are largely iininune while iLUssian rural Jews are 

 not. The descendants of southern mountaineers are very susceptible, 

 rhthisophobiacs are often dust victims whose fears can be allayed. 



Pneumonia is another great indoor disease, now I'auking with tuber- 

 culosis. It is a disease of the wellfed rather than of tlie poor. Individuals 

 subject to high blood pressure seem especially prone to pneumonia. An 

 acute "cold" (dust infection) may terminate in pneumonia. 



Influenza is a disease that appears periodically, after an interval of 

 years, and attacks practically everybody. After a pandemic subsides there 

 may be sporadic cases for a short time. Cases of "grip" after the sub- 

 sidence of epidemic influenza are usually cases of dust infection. Influ- 

 enza manifests itself by several cpiite well marked types, indeed, the simil- 

 arit5- to dust Infection is quite marked. The best treatment for Influenza, 

 in reducing the number and severity of symptoms to a iminimum and 

 avoiding a fatal termination, is the pure air treatment. 



This enumeration of specific diseases can not be continued but there 

 should at least be a mention of Cancer. 



Cancer : Although the active cause of cancer is still unknown it is 

 regarded as a definite or specific disease, running a more or less well- 

 defined course, usu.illy fatal in a short time. Cancer in its various forms 

 or kinds is to be ruled out. especially in dust victims of the alimentary 

 tract tyiie; to do that projierly requires the use of laboratory facilities. 



2. Diseases Due to Alteration in Stnietiire, to enlargement or atro- 

 phy, to altered Innervation or imperfect nutrition or circulation, to the 

 presence of scar tissue, to adhesions, etc. This condition is often due to 

 injury or to the presence of disease which produced alteration, with an 



