After asphalt was first used for street paving, other uses were discovered for it. For example, it is now used in the manufacture of asphalt shingles and roll roofings. Asphalt is waterproof and at the same time so tough and durable that it is peculiarly suited for that purpose. These qualities combined with its low price have no doubt been mainly responsible for its phenomenal success and popularity among builders and home owners. The earlier forms of roll roofing were supplemented very soon by more elaborate styles coated with granulated slate in different colors and cut into shingles in a wide variety of sizes and patterns. Hundreds of tons of native lake asphalt are used annually in the construction of built-up roofs and asphalt mastic floors for large office buildings and industrial plants. A large amount of asphalt is also used in the waterproofing of large engineering projects, such as tunnels, bridge structures, dams and reservoirs. [Illustration: A grove of cocoanut trees and tropical undergrowth at edge of Trinidad Asphalt Lake] Duplicate copies of this Booklet may be obtained free of charge from The Barber Asphalt Company, Philadelphia, Pa. Cable Address— Baspaco, Philadelphia ELEVENTH EDITION 3-27 50M 3-27 Lasher Printing Company Philadelphia, U. S. A. [Illustration: Back cover] Transcriber’s Notes —Silently corrected a few typos. —Retained publication information from the printed edition: this eBook is public-domain in the country of publication. —In the text versions only, text in italics is delimited by _underscores_. End of the Project Gutenberg EBook of The Wonderland of Trinidad, by Anonymous