lecithin content. To see whether this is true, two samples of No. 40 

 and >No. 38 were taken, extracted with chloroform for twenty hours, 

 evaporated to dryness and total phosphorus determined in the usual 

 manner. 



40 A 3% P. 



40 B 29% P. 



38 A Lost. 



38 B 22% P. 



]f these were converted into lecithin by multiplying by the fac- 

 tor 7,2703, 40a would give 7.92 per cent, lecithin, while 381) would 

 give 5.82 per cent, lecithin. 



Conclusion 



The data seems to indicate that the fowls fed on a high inor- 

 ganic ration have increased their organic phosphorus content. 



That the increase of the organic content shows an increase in the 

 lecithin. 



The weight of the shells remains practically constant. 



The inorganic phosphorus content remains practically constant. 



The phosphorus content of the egg shell does not increase. 



This indicates that the excess inorganic phosphorus fed to the 

 fowls passes out of the body. 



22 



