Thank you, Cygnus, for this most interesting quote: “In the number were several gentlemen, we understand, of very high rank in the army, and some connected with distinguished characters in the Senate, and at the Bar. They were all in full Highland dress, each having a tartan jacket and kilt, with the plaid in rich folds over the shoulder; hose, pouch, black velvet stock, and bonnet blue, decorated with the eagle plume, mingled with ostrich feathers . . .”

A pity there were no cameras back then.
I was wondering what Senate was being referred to, though, since the UK does not have such an institution at national level. Was it perhaps a university senate?
Regards,
Mike