Regardless of available area for brood, supering, and ventilation, my bees
of various races exhibit swarminess when they get more than 9 deep frames or
14 medium frames of brood.  Once getting 18 medium frames of brood resulted
in having to cut 71 swarm cups, many of which were juicy.  This is counting
the sum of both frame sides full as one frame, estimating fractional frames
of brood during inspection,  noting swarm cells, speaking into a recorder,
and transcribing the recording onto data sheets.  This comment therefore is
based on recorded observations.  If something wonderful will make a colony
of twelve deep frames full on both sides of brood content not to swarm at
their earliest opportunity, please correct my ignorance.

Bill Morong