Above, another of the plaster ornamented frames. I'm using the plastic syringe, foreground, to inject glue into the cracks at the bottom of the ornaments. Directly under the miter is a blob of glue that has dripped. The frame is resting on a support stand at an angle so the glue can run into the area needing glue.
The crack is visible under the ornaments. This side of the frame has suffered some damage from moisture, and has been overpainted, obscuring the original finish.