QUESTIONS AND ANSWERS 43 



and acquires a yellowish hue, the depth of which depends upon the 

 amount of bile present. 



What is Fehling's solution and for what is it employed? 



Fehling's solution is an aqueous solution of cupric sulphate 

 miKed with potassio-sodic tartrate solution. It is used as a test for 

 sugar. See answer to preceding question. 



State the specific gravity of normal urine. 



The specific gravity of horse urine ranges from 1020 to 1050, 

 the average being about 1035. 



What is urea? Give its chemical formula. 



Urea is an end-product of metabolism. It is produced by the 

 metabolism of the albuminous foods ingested and the albuminous 

 substances in the body. It is a white, crystallizable substance and 

 the chief nitrogenous constituent of urine. Formula, CONjH^. 



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