Remove second "is" from bolded portion:
Sand from Thoulouse The usual good one is the one which is found in a vineyard near Puy David, but the one which is most excellent is the one is from the Touch, near Sainct Michel & toward Blagnac, in a vineyard that is quite high up. The latter is thinner & a little fatter than the other, & better for small works. It does not want to be reheated too much.
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