Final answer:
The specific gesture made by Hester's husband when she sees him in the crowd is not clearly described in the given text excerpts; it requires further context to determine.
Step-by-step explanation:
The gesture that Hester's husband makes when she spots him in the crowd is not explicitly described in the text excerpts provided.
However, given the context clues from various literary works referenced, it may be interpreted as an action that conveys discernible emotions or intentions, such as tenderness or disapproval. Literary analysis often requires examining gestures and actions to understand their significance in the narrative.