Encyclopædia Britannica, Ninth Edition/Brazil Nuts
BRAZIL NUTS are the seeds of Bertholletia excelsa (B. nobilis of Miers), a gigantic tree belonging to the natural order Lecythidacece, which grows in the valleys of the Amazons and generally throughout tropical America. The tree attains an average height of 130 feet, having a smooth cylindrical trunk, with a diameter of 14 feet 50 feet from the ground, and branching at a height of about 1 00 feet. The lower portion of the trunk presents a but tressed aspect, owing to the upward extension of the roots in the form of thin prop-like walls surrounding the stem. The fruit of the tree is globular, with a diameter of 5 or G inches, and consists of a thick hard woody shell, within which are closely packed the seeds which constitute the so-called nuts of commerce. The seeds are triangular in form, having a hard woody testa enclosing the " kernel ; " and of these each fruit contains from eighteen to twenty- five. The fruits as they ripen fall from their lofty position, and they are at the proper season annually collected and broken open by the Indians. From Para alone it is esti mated that upwards of two and a half millions of fruits, equal to fifty millions of " nuts/ are exported annually, in addition to the large quantities which leave other Brazilian harbours, and Demerara, Cayenne, etc. Brazil nuts are largely eaten ; they also yield in the proportion of about 9 oz. to each pound of kernels a fine bland fluid oil, highly valued for use in cookery, and used by watchmakers and artists.