As regards "try and...." it has taken on enough colloquial momentum to steamroller any faint protests on the grounds of correctness; it is still mostly incorrect, however. I can conceive of structuring a sentence using "try and" --such as Better to try, and fail, than never to try.--but not using "and" as the auxiliary to an infinitive. Where this is done the colloquialism seems to assume that the "to" is understood in the second infinitive, but it still clangs.


A