The move to starting with newly emerged bees was a significant switch made in the 90s. Before that, it was not part of the published protocols, presumably because most of us 50 years ago were well familiar with the work of researchers such as DeGroot.
***********************************************
The BEE-L mailing list is powered by L-Soft's renowned
LISTSERV(R) list management software. For more information, go to:
http://www.lsoft.com/LISTSERV-powered.html