Scientific Proceedings (60). 



as follows: The injection of any compounds which have either 

 magnesium or the sulphate radical as a component caused the 

 appearance of hyaline casts in the urine. The injection of salts 

 which had in their composition neither Mg nor SO4, produced, 

 however, no such effect. Of the magnesium salts, besides the 

 sulphate, the chlorid, nitrate and the acetate were studied also. 

 They all caused the appearance of hyaline casts in abundance. 

 The acetate was perhaps less effective. Of the sulphates, besides 

 the magnesium, also the salts of sodium, ammonium, and potassium 

 were studied. All gave hyaline casts; the action of potassium, 

 however, was less transparent. On the other hand the chlorids of 

 sodium and of ammonium and the nitrate and the acetate of sodium 

 produced no hyaline casts. The effects of potassium salts were 

 apparently complicated by the profound action of these salts 

 upon the heart and probably also by some direct action upon the 

 kidneys. Of course, we could not attempt to give here any further 

 details, nor enter upon a theoretical discussion of the possible 

 significance of the reported facts. We wish only to add the state- 

 ment that an analysis of the experiments seems to show that there 

 is some definite relation between the diuretic action of the salts 

 under discussion and their specific capacity for producing hyaline 

 casts. 



103 (920) 



The specific dynamic action of levulose, glycocoll and alanin in 

 phlorhizin glycosuria. 



By Graham Lusk. 



[From the Physiological Laboratory of the Cornell University Medical 

 College, New York City.] 



Ingestion of levulose by a dog which has been phlorhizinized 

 does not increase the metabolism; the respiratory quotient is not 

 changed and levulose is converted into dextrose, for this alone ap- 

 pears in the urine and in increased quantity. Ingestion of glycocoll 

 or alanin largely increases the metabolism in glycosuria, although 

 they are not oxidized and are converted into glucose and urea. 

 The conclusion is drawn that the preliminary cleavage products 

 of carbohydrate break-down are not stimulants of metabolism, 



