 Hume’s seventh and eighth rules do not directly echo Newton’s four rules. Hume admits, however, that one should be cautious in applying and extending the seventh rule because one cannot extrapolate from a “few experiments” (THN 1.3.15.9; he appeals to the rule at 2.2.8.4). The example Hume offers (on the relationship between heat and pleasure/pain) is about a mental phenomenon. Even so we think there is an important critical relationship between Hume’s Rule VII and Newtonian gravitation (what follows is taken over from Hazony &amp; Schliesser 2016). This relationship is not explicit in his text, it is established by Hume’s wording, which closely follows Newton’s phrasing in discussing gravity in the Principia: In his Book 3, Proposition 7, Corollary 1, Newton describes gravitation as an action in which “every attraction toward a whole arises from the attractions toward the individual parts”. In Rule VII, Hume speaks in these same terms, arguing that a quality that “encreases or diminishes with the encrease or diminution of its cause”, should be “regarded as a compounded effect, deriv’d from the union of the several different effects, which arise from the several different parts of the cause”. And, elsewhere in the Treatise, Hume writes explicitly of the force of gravitation using just this language (THN 1.3.2.16). On the face of it, then, Hume’s Rule VII seems to adopt Newtonian language in order to provide an alternative description of the kind of extrapolation involved in establishing Newtonian gravitation.