From: "Dave Cushman" <dave.cushman@lineone.net>
Date: Tue, 8 Jan 2002 12:16:41 -0000
To: <BiologicalBeekeeping@yahoogroups.com>
Subject: Re: cell size measurement... JZ/BZ

Hi Dennis & all

There are two "generations" of JZ/BZ cups...

The early one is identified by strongly pigmented plastic and has a smaller
interior curvature.

The current type has weak pigmentation and has internal dimensions in line
with Steve Tabor's "glass blown cups" experiment.

In my opinion the differences are a reflection of larger bees in modern
times and I have reverted to using wax cups from an elderly mould that has
dimensions that agree with the literature of 60 years ago and older.

The same different sizings occur between type one and type two cups from the
Jenter system.

Best Regards & 73s, Dave Cushman G8MZY
Beekeeping and Bee Breeding Website
http://website.lineone.net/~dave.cushman