The Atomistic Theory of Matter is based on four kinds of point-like stable particles: electrons (e), positrons (p), protons (P) and eltons (E). These carry two kinds of conserved elementary charges, q_{i } = {±e} and g_{i } = {±g∙m_{e}, ±g∙m_{P}}. This paper discusses approaches which lead to the static and dynamic forms of interaction. The interactions are caused by elementary electric charges, q_{i}, and by the elementary gravitational charges, g_{i }and the interactions propagate with a constant speed, c. The propagation speed is independent of the state of the motion of the particles. The equations of motions of the fields and the particles are drived.

**DOWNLOAD the PDF-Version of the manuscript.**