"Observations" . . "De ascensionibus rectis : a Flamsteedio quadrantis muralis ope observatis" . . "Ascensionibus rectis" . . . . . . "De ascensionibus rectis a Flamsteedio quadrantis muralis ope observatis : ... Scripsit et summorum in Philosophia honorum" . . . . . . . . . . "De ascensionibus rectis a Flamsteedio quadrantis muralis ope observatis" . . .