32 
~N. C. Agricultural Experiment Station 
Fig. 12. Amount of Grit Remaining in the Gizzards of Hens at the End of 
Each Period. 
Hen No. 19, killed 156th 
Hen No. 20, killed 170th 
Hen No. 21, killed 248th 
Hen No. 22, killed 270th 
day. Wt. gizzard, 17.36 
day. Wt. gizzard, 14.93 
day. Wt. gizzard, 4.51 
day. Wt. gizzard, 10.46 
gins. 
Wt. 
grit, 14.05 
gms. 
gms. 
Wt. 
grit, 
9.86 
gms. 
gms. 
Wt. 
grit, 
2.52 
gms. 
gms. 
Wt. 
grit, 
5.00 
gms. 
