THE STORY OF ARTIFICIAL SILK 
central nervous system, causing mental stimu- 
lation and cheerfulness. They help to main- 
tain the temperature of the body at 98.4 
degrees. 
Here are at least 13 beneficial effects of 
the Ultra-Violet rays. What medicine can 
show as many ? What other method for the 
promotion of health is as efficient as these 
marvellous rays, whose nature we did not 
know until a few years ago ? 
These rays have been found to cure eczema, 
rickets, scurvy, tuberculosis, ulcers, carbuncles, 
boils, neurasthenia, etc. They even take the 
whoop out of whooping-cough and often cure 
ordinary colds. They relieve and often cure 
rheumatism, lumbago and gout. 
They are by no means a cure-all, but few 
doctors who use them would care to set 
limits to what they can do. They are a very 
effective help to all other forms of treatment. 
No one, as yet, knows what they may do 
when the apparatus has been standardized 
and when the technique has been still further 
improved. 
Years ago, Dr. Palm discovered that the 
children who had rickets were usually those 
“hy