This work, which is my first work in the field of crystallography — a student work — encompasses substances of a random nature that were placed at my disposal from various laboratories. The particular feature of this work is that it applies, for the first time, the methods of computational crystallography set forth in the articles by Prof. E. S. Fedorov: "Fundamental Formulas of Spherical and Plane Tetragonometry" and "Calculation of the Symbol Numbers of a Complex" (Vol. IV, pp. 373 and 391, "Zapiski Gornogo Instituta"), with the designations for the faces whose coordinates were taken as the basis for calculation, as well as for the fundamental constants of the complex of faces, being the same as those used in the cited articles.