| For propagation, cut off the lateral rosettes with roots during March to April or September to October and plant in ordinary soil. |
| Conversely, the convex portion of the wavefront diverges as it travels, so that the beam is less intense after propagation than before. |
| Two samples of African rattans were supplied as living seeds for propagation by Dr T. Sunderland from wild plants in Cameroon. |
| Nineteenth-century physicists postulated the existence of an elastic solid, the aether, to account for the propagation of light. |
| Cut leafless stems of rose and abelia into 10-inch lengths and set them directly in the propagation bed or container. |
| In April we built propagation tables and raised the frame for the greenhouse. |
