This second edition of the second part of the book is substantially different from the first in two respects. First of all, only sections devoted directly to stereometry, together with its "additional" chapters (inversion, Euler's theorem, regular polyhedra and groups of rotations) are preserved from the material of the first edition. questions of projective and anallagmatic geometry, as well as synthetic theory of conic sections, included in the second part of the Adamar course (and available in the first edition of the second part), are omitted in this edition. At the same time, the second edition of the book contains complete solutions to all the problems in the text.