CIRCl'LATION OF IMIOSI'HORUS IX THE FKOO 



387 



Temp -21 



^No 



2 5 



Time in hours 



Fio. 2. 3'-P content of the frog's plasma after injecting ^'P into the 



lymph sack. T = 21''. 



In another set of experiments, we injected large amounts of phosphate 

 (corresponding to 6.1 mgm P) into the lymph sack of the frog. The 

 inorganic P content of the plasma at different times is seen in Table 2. 



Table 2. — P Content of the Plasma after Injecting 6.1 mgm. 

 P into the Lymph Sack of the Frog 



RELATIVE RATE OF UPTAKE OF LABELLED PHOSPHORUS BY THE 



BONE AND THE MUSCLE 



In our preliminary experiments, the results of which are reported 

 in Tables 3 — 10, we compared the uptake of labelled phosphorus by 

 fresh bone and muscle samples of equal weight at 2° and 22°, respect- 

 ively. 1 gm muscle tissue was found to take up less ^^p than 1 gm bone 

 tissue, though the difference is much less than would be expected if 



25* 



