<I don't have the Difco book here at home; however, it sounds like you
had either a typing error, handwriting error, or a translation problem.
I think you are probably looking for "Difco Bactone", and if I remember
right (been a few years since I used it) it is a pancreatic digest, but I
wouldn't swear to it. Try looking up Difco's manual on "Bactone" and see
if you have any better luck. >
Anicet had said the bitone was an ingredient in Columbia agar. I looked
this up, and she's right. Just no actual formulation for Bacto Bitone is
in here. Also, I checked for the Bactone too on seeing this post you
sent. No Bactone either.
This is getting rather intriguing, isn't it?