Amused, the helper smiles and shakes his head. He is now ready to test whether this language has no plural form at all, and points at one stone first, then at a larger heap of uncounted stones. This gives Pike the idea of making collections of uncounted objects and, he then holds up one of the objects and points at the whole heap. He reaches for a green rag and for a green leaf and holds the two objects beside each other. He then takes a white rag and holds that before the green leaf.
Pike now gets more objects of the same color and gestures as before.
The helper's intonation had a lot to do with guessing that the one was a question and the other was an assertion or a statement. Pike now moves in for the first verb. He sits down in a chair, gets up, and motions to the man to sit down. There are some toy dogs on the table. He correctly concludes this means these dogs are sitting, those dogs are standing .