431 



iijau's euviroiimeiit to such an extent that he ooukl no longer flourish. 

 Malaria literally means bad air, but in the case of malarial fever we know 

 that this is really not true. Regarding the air conditions of our cities we 

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

 had air is a factor in destroying our own civilization, shall we say by 

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



Tuberculosis: Thi.s is the great indoor air disease which is actively 

 weeding out those not adapted to city life or to life indoors under bad 

 air. IndiA'iduals whose ancestors have 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 ax'e largely immune while Russian rural Jews are 

 not. The descendants of southern mountaineers are verj- susceptible. 

 I'hthisophobiacs are often dust victims whose fears can be allayed. 



Pneumonia is another great indoor disease, now ranking with tuber- 

 culosis. It is a disease of the wellfed rather than of the 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 quite well marked types, indeed, the simil- 

 arity to dust infectiou is quite marked. The best treatment for Influenza, 

 in reducing the number and severity of symptoms to a minimum 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, usually fatal in a short time. Cancer in its various forms 

 cr kinds is to be ruled out, especially in dust victims of the alimentary 

 tract type; to do that properly reciuires the use of laboratory facilities. 



2. DiseancH Due to Alteration in Structure, to enlargement or atro- 

 phy, to altered iimervation 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 



