76 TOBACCO. 



that he had examined the eyes of twelve thousand 

 of the boys and girls of that city ; that he found 

 four per cent of the boys color-blind, while but 

 ten girls were thus affected. The boys could tell 

 black from white, but they could not tell blue from 

 green, or the different shades of various colors. 

 f I find,' said he, ( the average boy of twelve with 

 a cigarette in his mouth, which is dipped in nico- 

 tine"' " 



Notwithstanding the source from which it came, 

 the audience received the statement with such in- 

 credulity, that the oculist requested and received 

 permission to bring his science-test to bear on the 

 spot. These were men, not boys ; women, not 

 girls ; and not four, but ten per cent of the men 

 were color-blind ; while not a woman was thus 

 affected. 



When we consider that the safety of our trains, 

 with their hundreds and thousands of passengers, 

 is often dependent on the instant and accurate ren- 

 dering of signals, — the color of a li^ht or of a 

 flag, — we can easily see how T utterly such a defect 

 in the vision disqualifies one for this service. 



A thorough and annual examination of all these 

 employes would seem indispensable to public 

 safety. 



DELIRIUM TREMENS. 



That most terrible of diseases, delirium tremens, 

 which was formerly regarded as due only to 

 alcohol, is now, by Dr. Abraham Spoor and other 



