10 AUGUST 1991, Page 45

Solution to 1018: Round-houses

Undefined radials are dwellings (4, 5, 9, 16, 18, 24, 26, 31, 35, 39) and circuit lights are jails (cf title).

Winners: J. C. C. Leach, Sheffield (£20): Charles Eddis, London SWI; Diana Macdonald, Teddington, Middx.

Dictionary prizes are sent out by the 'Post-a-Book' service.