Physics, mechanics, khim_ya and technolog_ya, raskrytyya for each practical djyatel, obshchepoleznyya otkryt_ya, novjysh_ya izobrjten_ya and usovershenstvovan_ya in vsjkh otraslyakh the industries, remesl and agriculture, a legchaysh_a ways razlichnykh proizvodstv, kak for nachinayushchikh praktikov - tekhnikov, mekhanikov, fabrikantov, zavodchikov, remeslennikov, gorodskikh and selskikh hozyaev, tak and for spets_alistov promyshlennikov.