...ftopp'd the Prifm, and fix'd it in that Pofture, that it mould be moved no more. For in that Pofture the Refractions of the Light at the two Sides of the...Angle, that is, at the Entrance of the Rays into the Prifm, and at their going out of it, were equal to one another*. So alfo in other Experiments, as often...

...ascend. Between the descent and ascent when the image seemed stationary, I stopped the prism, and fixed it in that posture, that it should be moved no more....angle, that is at the entrance of the rays into the prigm, and at their going out of it, were equal to one another. So also in other experiments, as often...

...ascend. Between the descent and ascent when the image seemed stationary, I stopped the prism, and fixed it in that posture, that it should be moved no more....the refractions of the light at the two sides of the icfrac.ting angle, that is at the entrance of the rays into the prism, and at their going out of it,...

...hole might be refracted upwards toward the opposite wall of the chamber, and there form a colour 'd Image of the Sun. The axis of the prism (that is the...of the refracting angle, that is at the entrance of it, were equal to one another. So also in other experiments, as often as I would have the refractions...

...descend, and then to ascend. Between the Descent and Ascent, when the Image seemed Stationary, I stopp'd the Prism, and fix'd it in that Posture, that it should be moved no more. (26-28) Newton's language, at once describing scientific method and imaginative design, relies on all...

...descend, and then to ascend. Between the Descent and Ascent, when the Image seemed Stationary, I stopp'd the Prism, and fix'd it in that Posture, that it should be moved no more. For in that Posture the Eefractions of the Light at the two Sides of the refracting Angle, that is, at the Entrance of the...