14:6 GENERAL BIOLOGY. 



CHICK. 

 I. The Egg. 



1. Raw egg. 



Holding the egg in the left hand with its rounded 

 end toward the right, make a small opening (by 

 tapping with the points of tJie large scissors) in 

 the rounded end. 

 Note: 



(a) The shell. 



(b) Two membranes. 



(c) The air-space between the two membranes. 

 With large scissors cut an oval piece from the top 



of the shell. 



Look in and identify the parts : 



(d) The white, with chalazse. 



(e) The yolk with the blastoderm. 

 Diagram ! 



Enlarge the opening and gently pour the, egg into a 

 dish. 

 Does the yolk mingle with the white ? 



2. Boiled egg. 



Remove the shell, finding again the mem- 

 branes and the air-space. 



With the rounded end to the left try to take 

 off the white by unwinding it spirally from 

 left to right. 



Find the blastoderm. With a razor divide 

 the yolk into halves, catting- through the 

 middle of the blastoderm. Try to see : 



