NON-PROTEIN NITROGEN 



315 



(a) Organs and tissues. Hatai ('17) has determined the total 

 nitrogen as well as the non-protein nitrogen in several organs of the 

 adult albino — table 171. 



TABLE 169 

 Inorganic constituents in new born rats from normal mothers. Average of two 



rats {Toverud '23) 



ASH ON BODY 

 WEIGHT 



per cent 



1.576 



Ca ON BODY 

 WEIGHT 



per cent 



0.2705 



Ca ON .\SH 



P ON BODY 



WEIGHT 



per cent 



17.16 



per cent 



0.267 



P ON .^H 



per cent 



16.88 



Mg ON BODY 

 WEIGHT 



per cent 



0.0218 



Mg ON ASH 



per cent 



1.395 



TABLE 170 

 Giving the distribution of phosphorus in the albino rat {Heymann, '04) 



* Apparently erroneous since the sum of the figures for nuclein, lecithin and 

 phosphate phosphorus is 2.0381 per cent. 



TABLE 171 

 Showing the total nitrogen as luell as non-protein nitrogen in several organs of the 



adult albino rat 



Calcium in the blood has been determined on three normal 

 adult rats, Toverud ('23), table 172. 



Composition of milk. By carefully collecting the stomach 

 contents immediately after ingestion from albino rats 1-14 days 



