This crossword No. 631 clues and answers were published on Sun 21 Oct 2007 and the puzzle can be visited by following The Guardian Speedy Crossword No. 631 link.
All Across Clues and Answers:
1-across – Mechanical device : SPRING
4-across – Spoken nonsense : DRIVEL
9-across – Yearbook : ALMANAC
10-across – Punctuation mark : COLON
11-across – Essential, life-giving : VITAL
12-across – Pacify, placate : APPEASE
13-across – Legal proceedings : PROSECUTION
18-across – Succinct, terse : LACONIC
20-across – Love affair : AMOUR
22-across – Body of soldiers : SQUAD
23-across – Rebuke : REPROOF
24-across – Walk unsteadily : TOTTER
25-across – Private, covert : SECRET
All Down Clues and Answers:
1-down – Deprive of food : STARVE
2-down – Send money in payment : REMIT
3-down – Confound, bewilder : NONPLUS
5-down – Go over again : RECAP
6-down – Site of eruption : VOLCANO
7-down – Tarry, hang about : LINGER
8-down – Instant lottery ticket : SCRATCHCARD
14-down – Enlist : RECRUIT
15-down – Tread down : TRAMPLE
16-down – Small private room : CLOSET
17-down – Return on investment : PROFIT
19-down – Elbow : NUDGE
21-down – Smell, scent : ODOUR
This crossword has in total 26 where 13 are across and 13 are down.