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5. 
THE CHERRY 
Stick a pin exactly into the middle of the white spot. 
If the pin did not slip, you will find it very hard, 
so hard in fact that the pin will not go into it at all. 
Now this hard white spot is really the bottom of the 
cherry stone, so you see just how it rested-on 
the stem, and how near it hes to the bottom of 
the cherry. 
Turn the cherry over and run a pin in at various 
places on the cherry and notice that in some it 
goes in deeper than others before it touches the 
stem. 
Have you seen how a drop or bead of juice follows 
the pin each time? Touch one of these droplets 
to the blotter in order to see its exact color. 
Take another cherry ; hold it with a cheek up. Stick 
a pin into the cheek and watch the drop of juice 
follow the pin. Do this several times, and on 
both cheeks. 
Now, there is one spot in the cherry that does not 
bleed when pricked. Find the spot opposite the 
stem (mentioned in § 1 e). Hold the pin exactly 
upright, and run it into the spot. If the pin has 
been perfectly straight, no juice will follow it. 
Prove this with another cherry. 
