How does Virginia Woolf use imagery in Between the Acts?

Imagery:

"Pointz Hall was seen in the light of an early summer morning to be a middle-sized house. It did not rank among the houses that are mentioned in guide books. It was too homely. But this whitish house with the grey roof, and the wing thrown out at right angles, lying unfortunately low on the meadow with a fringe of trees on the bank above it so that smoke curled up to the nests of the rooks, was a desirable house to live in."

"The wild child, afloat once more on the tide of the old man's benignity, looked over her coffee cup at Giles, with whom she felt in conspiracy. A thread united them - visible, invisible, like those threads, now seen, now not, that unite trembling grass blades in autumn before the sun rises. She had met him once only, at a cricket match. And then had been spun between them an early morning thread before the twigs and leaves of real friendship emerge. She looked before she drank. Looking was part of drinking. Why waste sensation, she seemed to ask, why waste a single drop that can be pressed out of this ripe, this melting, this adorable world?"