EXAMINATION OF NORMAL AND ABNORMAL URINE. 393 



534. Describe three tests by which albumin may be recognized, and 

 state the precautions necessary in making these tests. 



535. How may the quantity of albumin in urine approximately and 

 how accurately be determined? 



536. Describe Trommer's, Fehling's, bismuth, and fermentation test 

 for sugar. On what principles are they based? 



537. How is sugar determined quantitatively? 



538. By what tests are biliary pigments and acids recognized in 

 urine ? 



539. What is the nature of urinary sediments, and by what means 

 are they recognized? 



540. What are urinary calculi generally composed of, and by what 

 simple tests can their nature be determined? 



