Abstract: A device for mixing glue or a like flowable substance with particulate material such as wood chips in which the chips are fed into one end of an elongated horizontal cylindrical chamber and are discharged from the other end while being caused to follow a rotary path in the chamber by a mixing member in the chamber having arms extending radially to near the periphery of the chamber. Glue feeding conduits extend into the chamber and into the ring of material therein between adjacent ones of said arms. The glue feeding conduits are connected in groups to manifolds and can be removed from the chamber in groups together with the respective manifold.