This crossword No. 13102 clues and answers were published on Mon 07 May 2012 and the puzzle can be visited by following The Guardian Quick Crossword No. 13102 link.
All Across Clues and Answers:
1-across – Compound present in serum — ironstone : SEROTONIN
8-across – Rub out : ERASE
9-across – Living in water : AQUATIC
10-across – Sussex city : BRIGHTON
11-across – Baptismal bath : FONT
13-across – Improvement : UPTURN
14-across – Wife : MISSUS
16-across – Stamp of approval : SEAL
17-across – Connector between the rear wheels : BACKAXLE
19-across – Even more mad : INSANER
20-across – Record footage : VIDEO
21-across – Field Marshal, made Secretary of State for War in 1914, d. 1916 on way to Russia : KITCHENER
All Down Clues and Answers:
1-down – One minds rams and ewes : SHEPHERD
2-down – Motive : REASON
3-down – Attempt to sell, perhaps by pestering : TOUT
4-down – Laughing gas : NITROUSOXIDE
5-down – Friendly greeting : NICETOSEEYOU
6-down – Canadian province : NEWBRUNSWICK
7-down – Public urban train system : RAPIDTRANSIT
12-down – Idle : TICKOVER
15-down – Senior nurse : MATRON
18-down – Part of a foot : INCH
This crossword has in total 22 where 12 are across and 10 are down.