Foot bridges in Morocco that are nsed for heavy traffic have been the subject of rauch concern to the engineers. Elm planks on oak stringpieces were the material! employed, but these wore ont so rapidly that a return to the old style of building was proposed. This consisted of cables made from the fiber of the aloe. These cables are plaited and twisted from fiber and are nearly two inches thick and 8% inohes wide. They are saturated with tar and firmly nailed to oak planking. The ends are fastened by iron straps. These cables inake most admirable footpaths. They are sufficiently elastic to be pleasant under the feet, and experience has demonstrated that they are far more durable than any material heretofore applied for this purnose.