No need for the personal attack, Mary.
Regardless of why the Luminol reacts with turnips, Fulcanelli was correct in that it does react to turnips.
Are you attempting to assert that there was enough iron in the dirt outside the cottage for only some footprints to have been left? Because if you're attempting to attribute the luminol results to dirty shoes, there is a conspicuously large area of the cottage floor that didn't return shoeprints...
Oh, I didn't do it because I needed to, Bob.
Actually, I believe we were talking about the footprints in Raffaele's house, weren't we, as in when Fulcanelli wrote:
"It can safely stated to be blood, since bleach can be ruled out...since Raffaele's cleaner never used bleach." (Although the discussion applies to the cottage as well.)
Charlie wrote:
"Many things besides bleach and blood react with luminol. It could be a different cleaning product, dirty hands, dirty feet, or all of the above."
Fulcanelli wrote:
"Many things react with luminol? I note you don't list 'what' those things are...and I don't blame you...since everyone woyld be able to see how ridiculous it would be to argue the possibility of any of those things being on the soles of someone's feet. Just to give everyone one example of what these things are: Turnips.
"Can you offer up a single one of those 'other things' that react with luminol up as a 'plausible' candidate for the luminol prints? I await your candidate substance with interest."
I guess Fulcanelli wants people to believe that any argument stating that luminol reacts with other things is a ridiculous argument because luminol reacts with turnips and most people are not likely to have turnips on the bottom of their feet.
The fact is, luminol reacts with cyanides, and turnips (or rather, horderadish) contains
Allyl isothiocyanate. Also,
"Cyanides are produced by certain bacteria, fungi, and algae and are found in a number of foods and plants."
http://en.wikipedia.org/wiki/Cyanides
Don't you think it is possible that anyone's shoes could carry, as Charlie and I said before, dirt containing trace minerals that react with luminol, animal waste or "certain bacteria, fungi and algae?"
As you see above, Fulcanelli asked for a list of candidate substances that react with luminol and when I offered him one, he rejected it out of hand and refused to talk about it anymore. Not much of a sparring partner, he.
As for the cottage not showing up shoeprints all over the place, well, we know some areas of the floor were washed, some areas of the floor were not tested, and all areas of the floor were not sprayed with luminol until six weeks after the crime. I don't know why they even bothered, except that they didn't have any other evidence.