Oehler here restores the reading “quod et de modo,” instead of “de motu,” for which Pamelius contends. Oehler has the mss. on his side, and Fr. Junius, who interprets “modo” here to mean “mass or quantity.” Pamelius wishes to suit the passage to the preceding context (see ch. xxxvi.); Junius thinks it is meant rather to refer to what follows, by which it is confirmed.