The Delta (novel)
The Delta is a novel by Colin Wilson published in 1987. Plot summary. "The Delta" is a novel in which a vital spiritual force causes insects to grow large, so Niall heads for the Delta where it originates. Reception. Dave Langford reviewed "The Delta" for "White Dwarf" #100, and stated that ""The Delta" is better than promised by "The Tower", but the crudeness of its SF tropes detracts from the more interesting Wilson philosophy."