"Close one nostril with your finger, and dip the other into the water, then sniff gently, pulling a little water up into your poor, clogged schnoz." Charmion

How does one do this, Charmion? I first read it as dipping one's finger into water and sniffing, but upon re-reading, it sounds like you're saying to dip the other nostril into the water. ?

How? A large shallow basin? I cannot picture this...