  Magnetization has been measured for polycrystalline samples of LaCo1-xRhxO3
(0 {\leq} x {\leq} 0.9) in order to investigate magnetism induced in the solid
solution of two nonmagnetic end phases of LaCoO3 and LaRhO3. It is found that a
ferromagnetic transition is observed below 15 K in the range of x from 0.1 to
0.4. The effective Bohr magnetic moment evaluated from the temperature
dependence of magnetic susceptibility at around room temperature is independent
of x for 0 < x < 0.5 (approximately 3 {\mu}B per formula unit), and rapidly
decreases above x = 0.5. On the basis of detailed magnetization measurements,
the spin state and magnetic ordering of LaCo1-xRhxO3 are discussed.
