In addition to the regular lectures on Wednesdays, there will be two extra lectures (as mentioned before) on the following Fridays: 17/11 og 24/11 at 9:15-11 in room ?108 (opposite to the analytical course laboratory). A revised lecture plan will be available at the next lecture (Wednesday 1/11). You can also get it by sending an e-mail to me (grethe.wibetoe@kjemi.uio.no). GW