Cadastral Maps are maps on a large and complete scale. Properly a cadastral survey is made by the government for fiscal purposes; the word being derived through the French from Ital. catastro, which is from the low Lat. capitastrum, 'a register for a poll-tax' (Lat. caput, 'the head'). See ORDNANCE SURVEY. of the series. This reduction of the vegetative system, as might be expected, is usually accompanied by a reduction of size. Some grow rapidly on old lavas, and disintegrate them by their penetrating roots, so preparing a soil for other plants; the prickly pear is often planted in Sicily by the mere insertion of a joint of it in a fissure of the lava. Many species are Epiphytes (q.v.) in American forests (e.g. Rhipsalis); others range