24A = Laid birch out round point that's bad for grass.....H???O?I?A?.
23D = Main road is a nuisance.........???T. Presume 24A is an anagram.Could 23D be 'PEST',and if so why.?...
10A - Gave art and craft that were expefrimental = 2 words,5/5 letters. 15A - Good mark always follows fellow's complaint = 2 words,4/5 letters. For 15A have ; T?C?/ F?N??(presume first word is TICK)...
11a in maths part of a common logarithm writtenbeyond the decimal point(8) ?a??i?s? 35a optical toy in which partial pictures on either side of a card appear to merge when the card is rotated...