The narrator has detailed coherent dreams. (My son-in-law used to.) We now read a description of an "...intense, crayon-brilliant..." (p. 227) countryside:
a lane with low hedges;
emerald or siver coppices;
grazing cows and galloping horses seen across miles;
flitting, sparkling birds - robin, chickadee, hummingbird, mockingbird;
the mockingbird's trills;
odors of growth, fragrance and animals;
clouds wandering in an enormous blue.
The scene has the unreality of a dream:
scents to drown in;
gigantic birds, bees etc;
cattle and horses impossibly far away;
clouds shaped like castles and ships;
a feeling of infinite welcome.
I cannot dream like that and have no sense of smell in dreams - but all my thought processes are abstract. When discussing a dream sequence in a film, I commented that it was inauthentic because the dreamer saw himself as if from outside. My friends asked in surprise, "Do you never see yourself from outside in dreams?"
In Neil Gaiman's The Sandman, members of Morpheus' staff paint the sky and arrange the scenery in dreams. On this occasion, he must have been looking the other way because they lost all sense of restraint.