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is clear to him by frequent use.
I hold out a ball, a new object.
"This is a ball, Ulysses; a ball."
I repeat it several times, until the sound has fastened itself in his memory. Then I lay it on the table with a pipe, a cup and a book. I ask for them, one after another, and he hands them to me. I add numerous other objects, the names of which he has already learned, and thus combine review with advance instruction.