FEEDING SUDAN III TO YOUNG ALBINO RATS 107 



GENERAL APPEARANCE OF THE RATS FED WITH SUDAN III 



The rats fed with Sudan III appear hke those severely under- 

 fed. The hair becomes rough and erected, the spine is curved, 

 thus producing an appearance of elongated limbs. Neverthe- 

 less, the rats are very lively and hop around and play with each 

 other as actively as the controls. The urine becomes deep pink 

 usually within two or three days after the Sudan III feeding is 



10 



20 



30 DAYS 



Chart III. Showing the growth of the albino rats which received a small 

 quantity of the olive oil in the normal ration contrasted with the rats which 

 received in addition a small quantity of Sudan III. 



O O Control (oil fed) • % Experimented 



begun. The feces are hard and black in color and ether extrac- 

 tion reveals the presence of the dye in a considerable amount 

 in them. The rats are eager for the experimental ration for the 

 first two or three days, but afterwards they consume but very 

 small quantities. The skin around the urethral opening is usu- 

 ally wet and stained pink, owing possibly to lipuria. I have not 

 determined the maximum length of time during which the rat 

 can survive on this Sudan III ration. 



