The heat capacity of lanthanum(III) chromate(III) : LaCrO3, was measured over the temperature range from T = 272 K to T = 1000 K by adiabatic shield calorimetry. Thermodynamic functions have been derived and the values of C-p,C-m, Delta(298.15 K)(T)H(m)(o), and Delta(298.15 K)(T)S(m)(o) at T = 1000 K are 15.816 . R, 10402 . R . K, and 17.636 . R, respectively. Well known phase transitions are observed at T = 287 K and at T = 536 K. The first heat-capacity effect is due to a magnetic order-disorder transition from an antiferromagnetic to a paramagnetic state, whereas the second is due to a structural transition from an orthorhombic to a rhombohedral structure. An anomaly previously unreported was observed as a heat-capacity effect at T approximate to 855 K. The origin of this effect, the presence of which is shown to depend on thermal history, is discussed. The thermal conductivity of LaCrO3 at T = 1273 K; lambda = 1.9 W . K-1. m(-1), was calculated from the present heat-capacity results and thermal-diffusivities from the literature.