Rapid plant movement slower "growth-movements" of plants, called tropisms. Tropisms encompass movements that lead to physical, permanent alterations of the plant while rapid plant movements are usually reversible or occur at over a shorter span of time. A variety of mechanisms are utilized by plants in order to achieve these fast movements. Extremely fast movements such as the explosive spore dispersal techniques of "Sphagnum" mosses may involve increasing internal pressure via dehydration, causing a sudden propulsion of spores up or through the rapid opening of the "flower" opening triggered by insect pollination. Fast movement can also be expressed in predatory plants, where the
American Type Founders typecasting operations moved to the Kelly plant in Elizabeth. Salesmen were put on a commission basis. Inventories were cut, faces discontinued, and production of several models of Kelly press as well as the Klymax Feeder was shut down. ATF was released from court supervision in 1936 and in 1938 a sales study was made making the following observations: the Kelly press was obsolete, body type was now the exclusive province of line-casters and display type would have to be the mainstay of type production, almost half of what ATF was selling was other manufacturers products that could easily be made