7 6 



MAYNIE R. CURTIS. 



56.07 per cent, of the double-yolked egg and only 55.56 per cent, 

 of the triple-yolked egg. On the other hand the yolk, which 

 forms only 24.37 per cent, of the normal egg, forms 33.91 per 

 cent, of the double, and 35.52 per cent, of the triple-yolked egg. 

 Finally the shell percentage decreases from 12.05 per cent, in 

 eggs with one yolk, to 10.04 P er cent, in eggs with two yolks, 

 and 8.92 per cent, in the egg with three yolks. 



The different relation of the egg parts in eggs with different 

 numbers of yolks may also be seen by comparing the egg weight, 

 or the weight of a part, in double- and triple-yolked eggs, with the 

 weight of the egg or the same part of a single-yolked egg. If, 

 as is usually assumed, the yolks of multiple-yolked eggs are of 

 the same size as the yolks of normal eggs, the total yolk weight of 

 double- and triple-yolked eggs will be respectively twice and three 

 times the yolk weight of normal eggs. If in addition the weights 

 of the other parts were directly proportional to the number of 

 yolks contained, the weight of each part would be as many times 

 the weight of the same part of the normal egg as there are yolks. 

 That neither of the assumptions is correct for the eggs of 65K 



is shown by Table III. 



TABLE III. 



SHOWING FOR THE EGGS OF 65 K THE RATIO THAT THE WEIGHT OF THE WHOLE OR 

 OF EACH PART OF A MULTIPLE-YOLKED EGG is OF THE WEIGHT OF 



THE WHOLE OR THE SAME PART OF A SINGLE-YOLKED EGG.' 



The figures in this table as well as the actual weight figures in 

 Table II. show that the yolks in the multiple-yolked eggs of this 

 bird are smaller than those in the normal eggs. They also show 

 that the weights of albumen and shell are not as many times the 

 weight of the same paits in the normal egg as is the weight of 

 the yolk. The fact that the yolks of the double-yolked eggs were 

 smallei than the yolks of the single-yolked eggs, and that the 

 yolks of the triple-yolked eggs were still smaller, is in this case 



1 The mean of the ten single-yolked eggs given in Table II. 



