152 HABITS OF BIRDS. 
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pe hdéeael section aaa elevation of an Egyptian Egg-oven. 

one days, the same time as when eggs are naturally 
hatched byahen. About the middle of this period, 
a number of the eggs in the lower are moved into 
the upper rooms, in order to give the embryos 
greater facility in making their exit from the sliell 
than they would have if a number of eggs were 
piled up above them. 





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Hi i FAIR TOT hail 
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Teansvaiee section Soa sotspaliaige elevation of an Egyptian 
Egg-oven. 
The number of ovens dispersed in the several 
districts of Egypt has been estimated at 386; ané 
this number can never be either increased or di- 
minished without the circumstance being known, 
as it is indispensable for each mamal to be managed 
by a Bermean, none of whom are permitted to 
practise their art without a certified license from the 
Aga of Berme, who receives ten crowns for each 
