  We report about direct measurements of heat capacity of Majorana
quasiparticles in superfluid ${^3}$He-B which appear near the surface of the
experimental bolometer on the coherence length ${\xi}$. Two bolometers with
different surface-to-volume ratios were used which allows us to have different
calibrated contributions from Majorana quasiparticles to the ${^3}$He heat
capacity. Estimations of possible impact of ${^3}$He layers adsorbed on the
walls of the bolometer have been done.
