eraser of pencil as pollen brush

I was reading the following paper:

http://aob.oxfordjournals.org/cgi/content/abstract/95/4/583

On page 585 in the procedure section they state they they use the eraser end of a pencil to pollinate. I have not tried this; just thought that I would pass it along.

Link: aob.oxfordjournals.org/cgi/content/abstract/95/4/583