176 ABNORMAL URINE. 



3. Stand the mixture in a warm place for 24 to 48 hours. 



To prevent evaporation, it is desirable to have a tube 

 trapped with water, passing through the cork. 



4. Filter quickly, take S.G. at the same temperature as 



before. 



5. Multiply the difference in S.G. by 230, this gives the 



percentage. Example 1 -040 -- 1 -008 - -032 x 230 = 7 -36 1XC - 

 Or each degree of' difference = 1 grain per fluid ounce. 

 (Sir W. Roberts.) 



Examine Einhorn's Fermentation Saccharometer and Dr. G. 

 Johnson's Picro-saccharometer. 



Acetone occurs in the urine at times and is often associated 

 with glycosuria, pg. 128. 



Bile in Urine. Icteric Urine. Note the colour orange to 

 greenish-brown, or even to dark porter colour. 



Tests : Perform the tests for pigments and bile acids, pg. 128. 

 The test for acids often fails on account of their small quantity. 



