The 'and' is most probably a printer's addition.
"My thoughts are minutes, and with sighs they jar
Their watches on unto mine eyes, the outward watch."
As this is nonsense, and 'watches' was evidently suggested by 'watch,' I read motions for 'watches on.' "To a minute, to a second; thou shalt set thy watch, and the bridegroom shall observe its motions" (Congreve, Love for Love, iii. 9).
"What art thou? and how camest thou in hither?"