The eighth region is arid in certain places, and always exposed to the winds and sea fogs which are so harmful to the growth of the trees. The winds from the south blow throughout the year on nearly all our sea coast. The only trees that can be grown successfully are the eucalyptus (_E. globulus_), the Canadian and other poplars, the tamarisk, cypress, lambertiana, maritime pine, _Pinus insignis_, and all must be planted very thickly in order to resist the impetuous attack of the winds and the fogs. In the ninth and last region we have included the shores of the Straits of Magellan as far as Gallegos, and inland as far as the hills; and on the other shore Fireland (Tierra del Fuego). Fruit tree planting cannot be thought of there for the present, the only thing to be done is to propagate largely the native growths, and where the climate permits it to plant spruces, pines, firs, birches, beeches, hazels, currant bushes, yews, all of which are sturdy growths of the colder countries. CHIEF INDIGENOUS SPECIES OF FOREST TREES QUEBRACHO, _Aspidosperma Quebracho_, Schlet.—A tree 20 metres in height by 1 metre in diameter, with very hard wood, greatly valued for certain purposes. Does not resist exposure to the elements, however, and rots easily. Greatly prized for engraving and cabinet-making and for fine wood carving, etc. The bark and leaves are rich in tannin. It appears that there are some varieties which do not possess so large a percentage of tannin. It grows easily from seed which is sown in beds when ripe, where it must be nursed before sowing in beds. Its growth is slow at first, but once the roots have taken well in a soil rich in humus it attains a great size. It multiplies naturally from its seeds and should form a third as a stock tree in the afforestation of the subtropical regions. BOLDU, _Boldu chilanum_, Nees.—Grows to a height of 15 metres in the Andean regions, where its timber is used for various purposes. It multiplies from seed and should be sown in beds in holes. Can be utilized as an auxiliary in afforestation of its native region. LIGNUM VITÆ (Palo Santo), _Bulnesia Sarmienti_, Grisb.—20 metres in height by 0·75 metre in diameter. Grows plentifully in the Chaco and Misiones, Tucumán, Salta and Jujuy, gives a timber, heavier than water, which is used for cabinet-making and various ornaments. Multiplies easily from seed as an auxiliary in subtropical woods. PALO BLANCO, _Calycophyllum multiflorum_, Grisb.—About 15 metres in height, gives very fine timber, yellow in colour, used for different joinery purposes. Multiplies from seed like the preceding tree and used also as an auxiliary in the same regions.