inorganic. Two samples of the same set of eggs (Pen 1) were 

 taken, one portion was dried in a water oven at the hoiling point 

 of water, another portion was dried at between 45 and 50 degreesC. 

 with a current of air blowing into the oven. It was found that the 

 portion dried at the boiling point of water, gave a much higher 

 percentage of P than the one dried at the lower temperature. This 

 made it necessary to find the temperature at which the drying 

 must be carried on, so as not to change the organic phosphorus into 

 an available form to be extracted by the .2 per cent, hydrochloric 

 acid. One drying was carried on in a vacuum- oven water jacketed, 

 in one end was placed a glass tube drawn out to a very fine point ; 

 this was broken off in order to allow air to leak in very slowly thus 

 giving a current of air to carry out the moisture. The oven as 

 described would maintain a column of mercury approximately sev- 

 enteen inches. 



TABLE A 



The temperature at which the eggs were dried, the analysis of 

 which will be seen in the various tables is between 47 degrees and 

 50 degrees, using water ovens and having a current of air blowing 

 into the oven. This gives a rapid, thorough drying if the eggs 

 are kept well stirred. The analysis of the eggs before the feeding 

 of the organic and inorganic rations may be seen in Table 1. This 

 serves as a basis of comparison for the experiment tables of analy- 

 sis. 



TABLE I. 



14 



