274 



ADVENTURES IN RADIOIRESEARCH 



The phosphorus content of the sheU oi hens eggs is very variable, 

 fluctuating between 0.1 and 0.3% of the shell weight. It may be of 

 interest to recall that on the average 50% of the weight of the hens 

 eggs is due to albumin, 39% to yolk and 11% to the shell. 



Table 1. — Pho-sphorus Pre- 

 sent IN THE Yolk in Percent of 

 THE Total Phosphori:s 



I 



Phosphatide P i (il.4 



Water sohible P 9..1 



Phosphoprotein P 

 Nucleoprotein P . . 



■Zt.ii 

 1.6 



Table 2. — Phosphorus Content of Yolks 



^2' Lecithin jilus other phosphatides. 



According to general experience the yolk is formed while the growing 

 egg is located in the ovary, about half of the white of the egg is formed 

 by the albumin secreting portion of the oviduct, the shell membrane is 

 deposited directly on this; and the more fluid portion of the albumin, 

 constituting the second half of its entire l)ulk, enters through the shell 

 membrane while the egg is in the isthmus and uterus. It has been found 

 that the egg spends three hours in the glandular portion of the oviduct, 

 one hour in the isthmus, sixteen to seventeen hours in the uterus includ- 

 ing the time of laying. 



PHOSPHORUS COMPOUNDS IN HENS BLOOD 



The concentration of inorganic phosphorus, acid soluble phosphorus, 

 lipoid (phosphatide) phosphorus and also of the total phosphorus pre- 

 sent in blood, plasma and cells of chickens determined by Heller, 

 Paltl and Thompson^^^ is shown in Fig. 1. The curves seen in the figure 



(i^V. C!. Heller H. 

 357, (1934.) 



Paul, and R. B. Thompsen, T. Biol. Ghem. 106, 



