86 "Retrograde Circulation of Calcium" 



Brentano's, New York, 1914. (Referred to by Gies in a brief 

 review: Biochem. Bull., 1914, iii, p. 537.) 



14. Neubauer-Huppert : Analyse des Harns, Wiesbaden ; 1898, p. 



746. 



15. Schmidt and Strasburger: Die Fäzes des Menschen, p. 224. 



16. Strauss and Philippsohn : Zeitschr. f. Min. Med., 1900, xl, p. 369. 



17. Palacios: Extraphysiological or putrefactive urea; Amer. Jour. of 



Med. Sciences, 1915, cxlix, p. 267. 



