Hi everybody!
I am applying for a PhD in chemistry at Oxford. I have attended a phone interview at the beginning of february. But I received this week an email from the director of graduate studies who told me I would have to attend a second interview on the 29th of march. I am worried because I don't know what I could talk about in a second interview and because the department of chemistry should give its decision about applications today. I come from France and I don't know exactly how the application's procedure works. Is it usual? What should I prepare for the next interview?
(I still don't know if it will take place in Oxford or by phone). Thank you for any help!!!

No problems, this is ok.
Maybe he will ask you when you can come over there.

On the one hand I think it is quite normal that they want to have a face-to-face interview. However, I think in the case to come all the way from France I would call them again and say that you are not sure about the precedure and you would like to know whether they want you there and pay for the travel and accomodation.
Good luck