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78 BOTANIC PHYSICIAN. _ 
—S MEMBRANOUS EGG OF THE Fetus. 
The fetus is. enclosed ina membranous egg or bag withi 4 
ity of the egg consists of three membranes 
elicate membrane adheri 
oS During the first month of 
pigeon’s egg ; the fetus sw 
ts a little cloud, whi 
, 
eS 
s are filled 
; ment, called 2 
liar to the foe 
