* 1.1That as the whole Visible Image doth emane from the whole superfice of the object; so do all the parts thereof emane from all the parts of the Object: i. e. that look how many Atoms are designable in the superfice, from so many points thereof do Atoms exhale, which being contiguously pursued by others and others successively deceding, make continued Rayes, in direct lines tending thitherward, whither the faces of the particles point, from which they are deradiated.
For, insomuch as in the superfice no particle can be so minute to the sense, as, in respect to the Asperity, or Inaequality of its surface, not to have vari∣ous Faces, by which to respect various parts of the Medium: it must inevi∣tably follow, that all the rayes effluxed from an object, do not tend one and the same way, but are variously trajected through the Medium, some upward, others downward, some to the right, others to the left, some obversly or to∣ward, others aversly or fromward, &c. So that there is no region or point of the compass designable, to which some rayes are not direct. And from this branch shoots forth our