The Hen's Egg. 53 



has it ? Does it line the shell all around ? What do you 

 find at the large end ? Is this space empty or full ? (We 

 will talk of that again soon.) What color is this thin skin 

 that lines the egg-shell ? Can you get it out of the shell ? 

 Now let us look in the saucer and see the parts of the egg. 

 What is this thin watery part called ? Which part of the 

 white is thicker than this watery part ? What do we call this 

 beautiful yellow ball in the centre of the white ? Can you 

 see the thin silken sack that covers the yolk ? See these 

 milky-looking twisted cords that grow to the yolk on each 

 side. What else do you see on the yolk? See if you can 

 look closely and find a lighter spot. What shape is this 

 spot ? Did you ever see the little round spot before ? Is it 

 always on top, or beneath ? To-morrow we will see what 

 is inside of the yolk. 



II. Hard Boiled. 



Yesterday we had a fresh egg. Let us see how many 

 remember what we learned. What color was the shell, the 

 yolk, the white ? What comes next to the shell inside ? 

 Where is the air-bubble ? How many parts has the white ? 

 Which part is nearest to the yellow part ? What is this yel- 

 low part called ? Why does not the yellow part run out 

 and mix with the white ? What holds the yolk in the 

 shell ? Which part of the yoke is always on the upper 

 side? 



Here is another egg. It is hard boiled. We will crack 

 the shell and take it off. When anything cracks and 

 breaks easily, like an egg-shell, what do we say of it? 

 Name some other brittle things. Now I have tapped it all 

 over with my ruler until the shell is full of cracks. Now 

 we will pick the pieces of the shell off. Where is the lining 

 of the shell now ? Where is the air-bubble ? Is the lining 

 tough or tender ? Was it tougher or tenderer yesterday ? 

 What did boiling the egg do to the lining of the shell? 

 Where is the white ? How has boiling changed the white ? 

 Now let us cut down through the white carefully, so as not 



