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a linefor each insertion; about eight words to a line. Advertisements must be 1'ec;ived at publication office as eally as Thursday morning to appear in next issue. W" The publiJ?hers of this paper guarantee to advertisers a circulation of not less than 50,000 copies every llJeekly issue, Belting wanted, single or double, 80 ft. 28 in.; 65 ft. 24 in,; 52 ft. 16 In.; 42 ft. 20 in.; 37 ft. 8 in. State particu lars, price, condition� etc. E.doi:10.1038/scientificamerican08141880-107c fatcat:5v4fodegoveqpllqbpt4rcrtma