Puzzles

The winner of this month's crossword will receive goods from Fortnum and Mason and two runners up will receive £20 book vouchers. Please send your completed crossword to the below addrress.

Chemistry World
Royal Society of Chemistry
Thomas Graham House
Science Park
Milton Road
Cambridge
CB4 0WF
UK

Fax: +44 (0)1223 426017 

by 15 December 2009