254 THE INCOME OF ENERGY 



Alimentary Albuminuria. Test the urine of a 

 human subject for albumin at half -hour intervals. 

 After the first test let the subject swallow the 

 whites of six raw eggs. 



Albumin will probably be found. In many 

 subjects a portion of any unusual quantity of 

 egg-albumin may be absorbed unchanged into the 

 blood, whence it is removed by the kidneys. 



Albumose and Peptone not ordinarily Present 

 in the Blood or Urine. Dissolve as completely 

 as possible ten grams of commercial peptone, 

 which contains albumose as an impurity, in a 

 small quantity of water. Boil. Filter. Measure 

 the filtrate. 



Through a small opening in the linea alba of a 

 fasting anaesthetized cat draw out a loop near the 

 middle of the small intestine. Eemove the con- 

 tents by careful stroking. Tie double ligatures 

 0.5 cm. apart around the intestine at one end of 

 the loop and similar ligatures at a point 30 cm. 

 from the first pair. With a hypodermic needle 

 inject into the loop sufficient peptone solution to 

 distend it slightly. Measure the amount injected. 

 Eeplace the loop in the abdomen and close the 

 wound. Keep the animal in a cage arranged to 

 collect voided urine. 



After two hours, withdraw the urine from the 

 bladder and add it to any that may have been 

 spontaneously voided. 



