832 FRANCIS H. McCRUDDEN 



Calcium is ordinarily excreted in the intestine combined chiefly as 

 calcium phosphate and calcium soap. In an attempt to find if the high 

 calcium content of the feces was secondary to abnormally high phosphate 

 or fatty acid, quantitative analyses of the feces were made for calcium, 

 magnesium, phosphate, total fat, neutral fat and fatty acid, and the results 

 compared with those in other children (McCrudden and Fales(d) ). Table 

 18 shows the results. 



There is nothing in the figures to account for the great loss of calcium 

 in the feces in intestinal infantilism. 



From the standpoint of metabolism we can, then, divide cases of in- 

 fantilism into two groups: (1) Cases in which the failure to grow de- 

 pends upon a lack of available material for growth; and (2) cases in 

 which failure to grow is due to the absence of the growing power. Cases 

 of intestinal infantilism belong in the first group; cretins, and achondro- 

 plasiac dwarfs belong in the second group. 



