Local Crossword

[S21DanReb]

Stuck on the following from the local crossword and would appreciate your help. Many thanks.

22a Not the secret service, of course public c?o?s?i?
4d Study camping equipment from the inside ?o?t?n?s (could it be 'contents)
6d Open around one, content ?n?o (could it be 'into')

[S21DanReb]

Hi everyone, sorry for delay, was called away. Thank you so much captain 2, you're a genius. Thought I'd be thinking of it all night.

Thanks also to all those who joined in, where would we be without you.

Night all.

[S21DanReb]

Captain 2 is the Best Answer, but you are all among the best for helping me with this poser. Hope I can return the favour sometime.