Trinidad, British West Indies, is an island near the north coast of SouthAmerica, situated between latitudes 10? and 11? N., and opposite the numerousoutlets of the Orinoco River Delta. It is separated from Venezuela by the Gulfof Paria (salt water) and straits over 5 mi. (8 km.) wide. The area of theisland is approximately 1750 sq. mi. (453,250 hectares) and the population isapproximately 400,000. The climate is tropical with an annual rainfall of from45 to 60 in. (114 to 152 cm.). The oil fields consist of several units, or fields, located in the southernhalf of the island. Approximately 90 per cent. of the total production has beenyielded by fields situated within 7 mi. (11.3 km.) of the famous asphalt lakeand on the southwest peninsula. The most important producing fields, or units, are the following, which areshown on the accompanying map: Brighton, or Pitch Lake Field, operated by the Trinidad Lake Petroleum Co., Ltd., is situated beside the famous Pitch Lake; it even encroaches on thelake. Vessigny Field, operated by the Trinidad Lake Petroleum Co., Ltd., is situated2 mi. (3.2 km.) south of Pitch Lake. Lot One Field, operated by the Petroleum Development Co., Ltd., the UnitedBritish Oilfields of Trinidad, Ltd., and Stollmeyer, Ltd., is situated 3 mi.south of Pitch Lake upon Lot One of Morne l'Enfer Forest Reserve and adjoiningproperties. Parry Lands Field, operated by the United British Oilfields of Trinidad, Ltd., and the Petroleum Development Co., Ltd., is situated 3? mi. south of Pitch Lakeon Lot Three of Morne l'Enfer Forest Reserve and adjoining properties. Point Fortin Field, operated by the United British Oilfields of Trinidad, Ltd., is situated at Point Fortin, 6 mi. southwest of Pitch Lake. Fyzabad Field, operated by Trinidad Leaseholds, Ltd., is situated several milessouthwest of Fyzabad Village and 6 mi. south-southeast of Pitch Lake. Barracpore Field, operated by Trinidad Leaseholds, Ltd., is situated severalmiles south of San Fernando and 15 mi. (24.14 km.) east of Pitch Lake. AIME 065–10