The diazo group takes up the para position with regard to the hydroxyl group, and if this be prevented it then goes into the ortho position.
The government lines extend from Para to the Argentine and Uruguayan frontiers, where they connect with the telegraph systems of those republics, and from Rio de Janeiro westward across country, in great part unsettled, to the capitals of Goyaz and Matto Grosso.
Outside the two great river systems of the Amazon and river Plate (Rio de la Plata), which are treated under their respective titles, the rivers of Brazil are limited to the numerous small streams and three or four large rivers which flow eastward from the plateau regions directly into the Atlantic. The Amazon system covers the entire north-western part of the republic, the state of Amazonas, nearly the whole of Para and the greater part of Matto Grosso being drained by this great river and its tributaries.
If, however, one of the para positions in the hydrazo compound is substituted, then either diphenyl derivatives or azo compounds are formed, or what is known as the semidine change takes place (P. Jacobson, Berichte, 1892, 2 5, p. 99 2; 1893, 26, p. 681; 1896, 29, p. 2680; Annalen, 1895, 287, p. 97; 1898, 3 0 3, p. 290) A para mono substituted hydrazo compound in the presence of a hydrochloric acid solution of stannous chloride gives either a para diphenyl derivative (the substituent group being eliminated), an ortho-semidine, a para-semidine, or a diphenyl base, whilst a decomposition with the formation of amines may also take place.
La Condamine ascertained the nature of the tree, now known as Hevea brasiliensis, from which the Para rubber of S.
Gomez Herrero, Diccionario-gwta legislativo espanol (5 vols., Madrid, 1901-1903); Estadistica de la administracidn de justicia en to criminal durante; Boleiin mensual de estadistica demo grdfica-sanitaria de la peninsula y islas adjacenies (Madrid, monthly); Estado general de la armada para el ao; C. Fernandez Duro, Armada espanola desde la union de los reinos de Castilla y de Leon (9 vols., Madrid, 1895I 903); Boletin oficial del minisierio de marina.
A coastwise cable runs from Para to Montevideo with double cables between Pernambuco and Montevideo.
Amongst arboreous families Leguminosae and Euphorbiaceae are prominent; Hevea belonging to the latter is widely distributed in various species in the Amazon basin, and yields Para and other kinds of rubber.
This attempt led to the erection of Maranhao and Para into a separate Estado.
RUBBERS Para Ceara Castilloa Ficus Landolphia Para Latex Rubber Rubber Rubber Elastica Kirkii (Ceylon).