That to discern the Colour of the Ribbon, he places it betwixt the Thumb
and the Fore-finger, but his most exquisite perception was in his Thumb,
and much better in the right Thumb than in the left.

That after the Blind man had four or five times told the Doctor the several
Colours, (though Blinded with a Napkin for fear he might have some Sight)
the Doctor found he was twice mistaken, for he call'd the White Black, and
the Red Blew, but still, he, before his Errour, would lay them by in Pairs,
saying, that though he could easily distinguish them from all others, yet
those two Pairs were not easily distinguish'd amongst themselves, whereupon
the Doctor desir'd to be told by him what kind of Discrimination he had of
Colours by his Touch, to which he gave a reply, for whose sake chiefly I
insert all this Narrative in this place, namely, That all the difference
was more or less Asperity, for says he, (I give you the Doctor's own words)
Black feels as if you were feeling Needles points, or some harsh Sand, and
Red feels very Smooth.

That the Doctor having desir'd him to tell in Order the difference of
Colours to his Touch, he did as follows;

Black and White are the most asperous or unequal of all Colours, and so
like, that 'tis very hard to distinguish them, but Black is the most Rough
of the two, Green is next in Asperity, Gray next to Green in Asperity,
Yellow is the fifth in degree of Asperity, Red and Blew are so like, that
they are as hard to distinguish as Black and White, but Red is somewhat
more Asperous than Blew, so that Red has the sixth place, and Blew the
seventh in Asperity.

12. To these Informations the Obliging Doctor was pleas'd to add the