Phosphoric Acid in Blood in Rickets 375 



TABLE III. DISTEIBUTION OF PHOSPHORIC ACID IN RAT BLOOD 



NON-RACHITIO 



Diet 

 No. 



Total 

 acid 

 sol. 

 mg. 



Inorganic 

 mg. % 



Org. Hydro- 



lysable 

 mg. % 



Non-Hydro- 



lysable 

 mg. % 



303D 



23.0 



6.0 



26 



8.3 



36 



8.7 



38 



303 



20.6 



5.4 



26 



7.6 



37 



7.6 



37 



303 A 



18.7 



4.3 



23 



6.0 



32 



8.4 



45 



302C 



22.3 



6.1 



27 



5.3 



24 



10.8 



48 



302B 



22.6 



6.2 



27 



5.4 



24 



10.9 



48 



302A 



20.0 



6.7 



33 



6.7 



34 



6.6 



33 



302 



19.5 



7.6 



39 



5.9 



30 



6.0 



31 



301E 



28.0 



5.9 



21 



7.5 



27 



14.6 



52 



301 



30.0 



8.0 



27 



7.6 



25 



14.4 



48 



Aver. 



22.7 



6.2 



27 





30 





42 



RACHITIC 



Diet 

 No. 



Total 

 acid 

 sol. 

 mg. 



Inorganic 

 mg. % 



Org. Hydro- 



lysable 

 mg. % 



Non-Hydro- 



lysable 

 mg. % 



303C 



17.5 



2.4 



14 



4.3 



25 



10.8 



62 



303B 



17.4 



2.7 



15 



6.4 



37 



8.3 



48 



302D 



18.7 



2.6 



14 



4.1 



22 



11.9 



64 



301A 



20.0 



2.6 



13 



3.7 



18 



13.7 



69 



301B 



20.0 



3.6 



18 



4.0 



20 



12.2 



61 



301C 



19.2 



3.1 



16 



4.0 



21 



12.0 



63 



301D 



17.1 



3.4 



20 



3.8 



22 



9.9 



58 



Aver. 



18.6 



2.9 



15 





24 





60 



The nature of these diets will be discussed elsewhere. In this table they 

 are simply grouped as rachitic and non-rachitic, according to the X-ray and 

 histological findings. 



181 (2141) 



Observations on the distribution of anti-rachitic substances. 

 By T. F. ZUCKER and MARION BARNETT. 



[Fro-m the Pathology Department of the College of Physicians and 

 Surgeons, Columbia University, New York City.] 



When Mellanby found that the rickets produced in dogs was 

 prevented or cured by cod liver oil, he thought that since cod 

 liver oid is extremely rich in the fat-soluble A vitamin, that this 

 substance was responsible for the cure and that the deficiency of 



