. The Caribbean forester. Forests and forestry Caribbean Area Periodicals; Forests and forestry Tropics Periodicals. Vol. 24 No. 2 - 1983 83. 1940 42 44 46 48 50 52 54 5 6 5 8 I960 FISCAL YEAR Figure I. Major wood imports into Puerto Rico, 1940-1960. A. Minor wood products C. Plywood and veneer E. Furniture and millwork B. Railroad crossties D. Hardwood lumber F. Softwood lumber Source: Annual book of statistics of Puerto Ri?o, 1940-1950; P. R. Dept. of Agriculture and Commerce. External trade statistics. Statistical Yearbook, 1951-1960: P. R. Planning Board. mahogany (Swietenia macrophylla Ki
. The Caribbean forester. Forests and forestry Caribbean Area Periodicals; Forests and forestry Tropics Periodicals. Vol. 24 No. 2 - 1983 83. 1940 42 44 46 48 50 52 54 5 6 5 8 I960 FISCAL YEAR Figure I. Major wood imports into Puerto Rico, 1940-1960. A. Minor wood products C. Plywood and veneer E. Furniture and millwork B. Railroad crossties D. Hardwood lumber F. Softwood lumber Source: Annual book of statistics of Puerto Ri?o, 1940-1950; P. R. Dept. of Agriculture and Commerce. External trade statistics. Statistical Yearbook, 1951-1960: P. R. Planning Board. mahogany (Swietenia macrophylla King) makes up approximately 80 percent of all hardwood lumber imports. Most of the ma- hogany comes from Mexico or the United States. The latter shipments are re-sxports from Central and South America. Spanish- cedar (Cedrela mexicana Roem) and balsa (Ochroma lagopus Sw.) make up che bulk cf the remaining hardwood imports. Am:rican hardwoods imports, such as birch (Betula spp.) and oak (Quercus spp ), are negligible, about 160 thousand bd. ft. in 1960. Railroad crossties were used by the two public railroads and the sugar companies. In recent years the railroad companies have dis- continued operations and sugar companies have largely converted to rubber-tired wagons and trucks. For these reasons, tie imports have steadily declined to less than 1 million bd. ft. annually. Table 2. About 80 percent of this volume is southern yellow pine, mostly untreated. PLYWOOD AND VENEER Prior to 1940, no significant amount of plywood or veneer was being imported into Puerto Rico. Since then, annual imports have. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Southern Forest Experiment Station (New Orleans, La. ). Rio Piedras, P. R. : Tropical Forest Experiment Station, United States Forest Service
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