Nutritio n Investigations . 



357 



0.2 per cent acid alone has been made. It is noticeable that even the 

 very soluble hemicellulose, sinistrin, which is so speedily hydrolyzed 

 by acid (in ^ hour at 37° C. with 0.2 % hydrochloric acid) is not attacked 

 by ordinary diastatic enzymes within 24 hours. 



The parenteral introduction of these carbohydrates has resulted in 

 their speedy and apparently complete elimination through the kid- 

 neys without any change in character. The carbohydrates prepared 

 from Dulse, Irish Moss, Salep and Sinistrin have all been isolated and 

 identified in the urine, after subcutaneous and intraperitoneal injec- 

 tions. These results are not surprising, in view of the commonly ac- 



IT. 



The Influence of Salep upon the Mass of the Faeces. 



A. Fore Period: 3 Days on a Cellulose-free Diet. 



B. Mid Period: 3 Days on a Cellulose-free Diet to Which 15 grams of 



Salep Powder were Added Daily. 



C. After Period: 3 Days on a Cellulose-free Diet. 



cepted fact that carbohydrates must be converted into monosacchar- 

 ides before they can enter into the processes of intermediary meta- 

 bolism. 



Experimental evidence in support of this fact is given by such 

 investigators as F. Voiti and Blumenthal,^ who found that even di- 

 saccharides, as lactose and saccharose, were eliminated almost quanti- 



iMiinchener medicinische Wochenschrift, 1896, p. 717; Deutsches Archiv fiir 

 klinische Medicin, v. 58, p.521 (1897). 



^Beitage zur chemischen Physiologie, v. 6, p. 329 (1905). 



