Complex sentence: In 1873, another committee of the BAAS that also counted Maxwell and Thomson among its members and tasked with "the Selection and Nomenclature of Dynamical and Electrical Units" recommended using the CGS (centimetre-gram-second) system of units.
Split into simpler sentences: In 1873, another committee of the BAAS that also counted Maxwell and Thomson among its members and was tasked with "the Selection and Nomenclature of Dynamical and Electrical Units". They recommended the CGS (centimetre-gram-second) system of units.