This crossword No. 12509 clues and answers were published on Mon 14 Jun 2010 and the puzzle can be visited by following The Guardian Quick Crossword No. 12509 link.
All Across Clues and Answers:
1-across – US underground railway : SUBWAY
4-across – Fan — phone : BLOWER
8-across – Make merry : REVEL
9-across – Initial moves in a battle of wits : GAMBITS
10-across – Whiskey — biscuit : BOURBON
11-across – Map book : ATLAS
12-across – Racket : CACOPHONY
17-across – Place for sleeping birds : ROOST
19-across – Deadly disease of sheep and cattle : ANTHRAX
21-across – Made of a glossy material, especially PVC — hair made glossy with gel : WETLOOK
22-across – Dung of sea birds : GUANO
23-across – Mod’s 1960s rival — curved support under chair legs : ROCKER
24-across – : FRAMED
All Down Clues and Answers:
1-down – Medieval clerk : SCRIBE
2-down – Temporary encampment : BIVOUAC
3-down – Extemporise : ADLIB
5-down – Lower back pain : LUMBAGO
6-down – Revolve : WHIRL
7-down – Withstand : RESIST
9-down – Boarding bridge : GANGPLANK
13-down – Positive terminal of a primary cell : CATHODE
14-down – From which mutineers once swung? : YARDARM
15-down – Sliding compartment in a chest : DRAWER
16-down – English university : OXFORD
18-down – Drinks dispenser : OPTIC
20-down – Dynamic type — striped animal : TIGER
This crossword has in total 26 where 13 are across and 13 are down.