[Herbalist] Help-- toxicity data?

[Jenne Heise]

I'm working on an egg-dyeing project, and am suddenly looking at the toxicity of period
dyestuffs that might have been used on eggs-- and can can't find this listed in my books. The
dyestuffs I'm interested in are:
- madder
- bedstraw (lady's or dyer's)
- alkanet (I believe this is also a food colorant, so I _think_ it may be safe).
- cochineal
- brazilwood
- cochineal

Anybody got any info?
 --
Jadwiga Zajaczkowa, mka Jennifer Heise	      jenne at mail.browser.net
disclaimer: i speak for no-one and no-one speaks for me.
"I've been out for a while, But I'll be back in a bit, I am just walking
through the smoke, Finding out if this is it..." Suzanne Vega