68  REporT oF THE First ASSISTANT OF THE 
Although the per cent of shell was generally near to the aver- 
ages previously given, there were some wider variations. The 
following were found among 154 determinations (none of the eggs 
were soft shell) : 











Pen No.1 | Pen No.2 | Pen No.3 | PenNo.4 
(in forty (inforty- | (in twenty- (in fifty 
eggs). threeeggs).| one eggs). eggs). 
EUS TES a ULE ETT Daa ay ti a at 11.52 14.00 13.38 15.09 
IONMAB EE a Criee Scie re Mio MEM VL TUL URES, 1.32 5.96 7.90 5.03 



There were fewer of the extreme variations in Pens 1 and 3, but 
the number of eggs laid was much less. 
It has sometimes been proposed to test the freshness of eggs by 
the fact of their sinking or floating in solutions of a certain spe- 
cific gravity. Even if the density of fresh eges were a constant 
quantity, the solutions for determining it would require a more 
accurate method of standardizing than some that have been recom- 
mended. Specific gravity could be a good negative indication, but 
not an absolute one. The freshness of any egg which would float 
in a solution of 1.075 specific gravity, would be very question- 
able, but some eges two weeks old would sink in the same 
solution. 
Analyses were made of white and of brown-shell eggs, obtained 
from a mixed pen of fowls, fed on a varying ration (grain and 
green foods). The fowls which produced the brown-shell eggs 
were mostly of Plymouth Rock cross, a few of light Brahma 
cross. Those laying white-shell eggs were of brown Leghorn 
cross, a few of white Leghorn cross. 
These fowls were in the same pen and had the same food and 
treatment. The results showed practically the same relation 
previously noticed in eggs from different breeds which were 
fed alike. 
The analyses were as follows: 
Brown Shell Eggs — (Twenty-one eggs). 









Albumi- Total 
Water. Fat. en Ash. solide 
‘ rcent.} Percent. | Percent. | Percent. 
HICHEShLOUN Giese lee Ye elasr 14.05 - 95 27 .28 
MOWOESTTOUNG ees Seca ae, 13.61 92 

26.06 

