On Wed, 18 May 1994, Phil Veldhuis wrote:
 
> Greetings:
>
> I have become involved in a project which will involve a full sized colony
> operating as a observation hive in an art gallery.
>
> Could anyone with experiences with permantly installed observation
> colonies please email your wisdom? (If everyone will email me directly,
> I'll summarize for the list in a couple of days)
>
> I am particularly interested in the problem of giving the hive free flight
> via a tube in the wall.  What diameter should the tube bee?  What is the
> maximum length?
>
> Thanks in advance, Phil.
>
> My email address is:  [log in to unmask]
>
> --
> ------------oooooooooooooooOOOOOOOOOOOOOOOOooooooooooooo-------------
> Phil Veldhuis           |  "if something is not worth doing,
> Winnipeg. MB, Canada    |  it is not worth doing right"
> [log in to unmask] |                     Dave Barry (1985)
 
Have you checked "How to construct and maintain an Observation Bee Hive"
by N. Gary and K. Lorenzen at Davis, Division of Agricultural
Sciences, U. Of California, Leaflet 2835. January 1976? It has detailed
designs of a 4-brood chamber frames O.H. and useful comments on how to
mantain it.