Step 1: Understanding the Concept:
This question is about the effect of the stories told by the title character in Walter de la Mare's poem, 'Martha'.
Step 2: Detailed Explanation:
The poem describes how Martha's storytelling captivates her audience of children. Her voice and the magical tales she tells transport the listeners to another world, making them forget their surroundings.
This immersive, enchanting experience is very similar to a dream. The poem conveys a sense of hazy, beautiful, and slightly melancholic unreality, which is characteristic of a dream. The stories are so vivid and engrossing that they feel like a shared dream seen in the quiet of the day.
Step 3: Final Answer:
Martha's stories had an enchanting, surreal quality, making them seem like a dream one saw at night.