What shape are they?—"Flat, thin, and like a triangle."
Of what use are your shoulder blades?—"For my arms to rest upon."
Point to your collar bones.
Where are they fastened?—"To my shoulder blades and my breastbone."
Of what use are your collar bones?—"They keep my arms from sliding too far forward."
Of what are your bones made?—"Of food after it has been changed into blood."
Why should you eat wholesome food?—"That my bones may be strong and healthy."
How does impure air hurt the bones?—"Impure air makes bad blood, and bad blood makes poor bones."
Why should you sit and stand erect?—"Because my bones are easily bent out of shape; if I do not sit and stand erect, they will grow crooked."