This collection presents all the main works of I.V. Meshchersky on the mechanics of bodies of variable mass. Of the published works, only a brief note is not placed on the dynamics of the variable mass point in the case of simultaneous attachment and separation of particles, since a detailed description of this issue is contained in a fundamental article published for the first time in Izvestia of the St. Petersburg Polytechnic Institute in 1904 and placed here completely. The works of I.V. Meshchersky on the mechanics of bodies of variable mass were published mainly at the end of the 19th and beginning of the 20th centuries. Many of these works have become bibliographic rarities. These works have so far been inaccessible to a wide range of our scientific and technical intelligentsia.