336 Mary Davies Swartz, 



In both these experiments, the presence of dulse was readily detected 

 by Fehling's solution in every urine which showed a high rotation. 

 From the samples of the first 48 hours after injection, a considerable 

 amount was isolated and identified as carbohydrate. It is evident 

 that the excretion of this pentose-carbohydrate is gradual, commenc- 

 ing soon after the injection, and continuing from four to five days. 

 While any quantitative estimate of the amount excreted, based on the 

 changes in rotation, is subject to a high percentage of error, owing to 

 normal fluctations in the rotation of the urine, as well as to analyt- 

 ical discrepancies unavoidable in dealing with solutions containing 

 only minute quantities of the substance under investigation, it is evi- 

 dent that most of the dulse must have been excreted, and that, too, 

 without any essential change in character. 



INJECTIONS OF IRISH MOSS. 



1. Subcutaneous. 



A dog weighing 9.4 kg. received 100 cc. of Irish moss solution, con- 

 taining 1.5 grams of dry substance. No reducing substance occurred 

 in the urine. Changes in rotation, due to the injection, are shown in 

 the following table: 



Examination of Urine. 



May 18, 9 A.M. 

 May 18, 4 P.M. 

 May 19, 9 A.M . 

 May 20, 9 A.M. 

 May 21, 11 A.M. 

 May 22, 9 A.M. 



Tests for Irish moss on May 19th were negative, but on May 20th- 

 22nd they were faintly positive. The experiment was discontinued 

 at this point. The injection was not very well borne, the dog remain- 

 ing lethargic throughout the period. 



2. Intraperitoneal. 



Experiment A . A dog weighing 10 kg. received 160 cc. of an Irish 

 moss solution containing 1.3 grams air dry material. Examination 



