13a God is there no life in this place (4)? A? S Is it Mars
18a How one might test the elasticity of veracity (7,3,5) stretch the ? R??
15a. "Better on it than in it" says the sailor (4) d???
16d. Detect my mistake, would you? But you'll find I'm not at home...... (5,2,3) ????? me out
Many thanks
Many thanks to you all.
1 more that I forgot.
22a Make a terribly hard summation of the 10th..
Thanks ? Yeah, figures! (5) ? A? H?.
The answer to no 10 is addition. Don't know if that has anything to do with the answer or not