In 1908, the 18 cv Turcat-Mery engine was installed on the Odier biplane.

And in 1912, a 20 cv engine was installed on the Odier-Vendome.

From Appendix A3/6: Turcat-Mèry engines were manufactured in Marseille between 1896 and 1928 by Leon Turcat and Simon Mèry.

An application of one of them, with 18 cv, was seen on the Odier-Vendôme airplane.

“Experimental Odier-V with Turcat-Mèry engine” (PiP)