[2] Not available. Source: Invoice analyses, compiled by U. S. Tariff Commission. The processes for recovery of the cresols (fractional distillation) usually yield products more than 75 percent pure and most of the consumers of mixed or prepared cresols require products of high purity. This explains why there are no imports less than 75 percent pure, notwithstanding that they are duty-free under paragraph 1651. Under the act of 1930 cresols of 90 percent or greater purity are assessed for duty at 20 percent ad valorem and 3½ cents per pound while cresols 75.1 to 89.9 percent pure are assessed for duty at 40 percent ad valorem and 7 cents per pound. Naturally, since the duty on imports below 90 percent pure is double that on imports over 90 percent pure there are no imports of the former. Imports of crude cresylic acid are shown in table 79 and those of refined cresylic acid in table 80. Imports by principal sources are shown in tables 81 and 82, for crude and refined, respectively. TABLE 79.—_Crude cresylic acid: United States imports for consumption, 1924-37_ -------+-----------+---------+------- Year |Quantity[1]| Value | Unit | | | value -------+-----------+---------+------- | _Pounds_ | | 1924 | 2,327,528| $157,643|$0.068 1925 | 2,163,557| 122,742| .057 1926 | 5,702,740| 331,550| .058 1927 | 9,136,516| 567,802| .062 1928 | 10,687,109| 678,177| .063 1929 | 17,856,765| 952,110| .053 1930 | 9,009,674| 501,418| .056 1931 | 4,937,078| 244,631| .050 1932 | 4,077,700| 164,379| .040 1933 | 5,523,733| 178,824| .032 1934 | 7,163,511| 284,051| .040 1935 | 6,849,113| 265,485| .039 1936 | 13,476,427| 722,575| .054 1937[2]| 16,360,213|1,219,268| .075 -------+-----------+---------+------- [1] Conversion factor—8.5 pounds to gallon. [2] Preliminary. Source: Foreign Commerce and Navigation of the United States. TABLE 80.—_Refined cresylic acid: United States imports for consumption, in specified years, 1919-37_