Rubber Extraction in Costa Rica

Abstract

This article was published in the Weekly of the Association for the Promotion of Horticulture in the Royal States of Prussia for Gardening and Botany (Wochenschrift des Vereines zur Beförderung des Gartenbaues in den Königlich Preussischen Staaten für Gärtnerei und Pflanzenkunde), Berlin, Germany, on August 9, 1862. The author was the botanist Eduard Sell, german based then in San Ramón de Alajuela, Costa Rica.