Cochineal with alum mordant & cream of tartar for buffering on Romney. The top photo is fibre having been combed, but dyed on the scoured wool in its uncarded state. 
The bottom photo is from the first dye - one alum mordant, the other with oxalic acid from rhubarb leaves ( center sample).
The next photo is the same dyebath, possibly the fourth use of it on Romney, Merino top and silk hankies. All alum & cream of tartar for mordant/buffering. The last one was dyed July 18/15. This trio will be blended into batts.
One can see how the different fibres take on the dye differently. Yes it is getting lighter.
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