y. B. S. Haldane in 



led up to the accident. His answer was : " I am surprised 

 and sorry that the matter received so much publicity, 

 because such accidents are part of the normal daily risk 

 of our work and we do not think very much about 

 them." 



A splendid example of devotion was given by an English 

 nurse, Miss Mary Davies, at the American hospital at 

 Neuilly, in France, during the War. Dr Taylor, of the 

 Imperial Cancer Research Institute, had been experi- 

 menting with a quinine preparation for the cure of that 

 terrible malady gas-gangrene, but in using guinea-pigs 

 had been unable to obtain definite results. He needed a 

 case of gas-gangrene not complicated by other forms of 

 infection. 



Nurse Davies, who had studied at the Pasteur Institute, 

 had seen some two hundred fatal cases of the disease. 

 Without saying a word to anyone, she took a room near 

 the hospital, and two days later sent a note to Dr Taylor 

 begging him to come. He came and found that she had 

 given herself an injection of the culture of gangrene which 

 he himself had been using. Within two hours symptoms 

 of gas-gangrene developed. The doctor at once injected 

 his quinine preparation, and in twenty-four hours the 

 patient was out of danger. The risk taken by Nurse 

 Davies was terrific, but it was indirectly the means of 

 saving many lives. 



Another nurse, Miss Clara Maas, of the American 

 Ambulance, gave her life in a similar experiment. She 

 allowed herself to be bitten by a mosquito infected with 

 yellow fever. Though treated with serum by Dr Caldas, 

 she died. She was one of several people who allowed 

 themselves to be infected with the same deadly disease. 

 Of these, three died, but it is largely owing to their self- 

 sacrifice that yellow fever, once the plague of the Southern 

 States, has now been practically conquered. 



Dr Houston of the Metropolitan Water Board is another 



