Abstract: A machine for automatically laying building blocks and the like into a panel. It includes a supply conveyor for feeding a predetermined number of blocks into the machine in proper sequence to form a course, the blocks standing on end. An in-feed support conveyor receives the blocks while still in upright position. A feeder carriage reciprocates over the in-feed conveyor and carries flow-guns for applying adhesive to the exposed upper ends of the blocks and to the exposed edges of the blocks at different times. The carriage is provided with clamps which, as the carriage advances, successively clamp the blocks for pivotal movement about transverse axes. Beyond the in-feed conveyor, is a course-forming and supporting conveyor which is transversely arranged relative to the in-feed conveyor and, over which the carriage advances, which has pairs of parallel guides for receiving the clamped blocks on the feeder carriage.