A doffer is someone who removes bobbins, pirns or spindles holding spun fiber such as cotton or wool from a spinning frame and replaces them with empty ones. Historically, spinners, doffers, and sweepers each had separate tasks that were required in the manufacture of spun textiles. From the early days of the industrial revolution, this work, which requires speed and dexterity rather than strength, was often done by children. After World War I, the practice of employing children declined, ending
For a plant organ to bend in response to a stimulus, differential growth of cells on either side of the organ is required. For example, for the stem of a plant to bend toward a light source, cells on the shaded side of the stem near the shoot tip must elongate faster than cells on the lighted side.
Overview. Plants benefit from regular pruning. Prune tropical plants to encourage growth, remove damaged or dead stems, invigorate old plants and limit size.Once the plants are pruned, new blooms start growing, resulting in a bushier plant.The ideal time to prune tropical plants is once the tender new growth is safe from frost damage, in early spring.verview. Plants benefit from regular pruning. Prune tropical plants to encourage growth, remove damaged or dead stems, invigorate old plants and limit size.