Apologies if these queries have already been answered elsewhere, but I haven't found any mention of them on here.
I've completed Times Jumbo 1273, but there are two answers which I don't fully understand.
29 across: Made them to go either side of a jewelled crown.
The answer appears to be DIADEM. MADE = DID, round A - but where does the "EM" come from? It is a contraction of "them" - and if so, what in the clue indicates that the first two letters of THEM are missing?
40 down: Person to blame, that is, to mimic and attack?
The answer is clearly SCAPEGOAT. MIMIC = APE, ATTACK = GO AT. But how does SC come to mean THAT IS?
I'm baffled! Can anyone help please?