NOTES ON CERTHIA HIMALAYAN A, 467 



The weights of four fresh eggs were : — 



2 at 21 grains each. 



2 at 20 „ 

 Average weight of the four eggs = 20-| grains. 

 The weights of three semi-incubated eggs were : — 



2 at 18 grains each. 



1 at 19^ grains. 

 Average weight of the three eggs 



