The 1949 Conservative Prayer Book, while dignified in its presentation of historic Jewish services, required crucial modifications to fully serve both American and English conservative Jewish communities. Cecil Roth's detailed liturgical analysis reveals how this groundbreaking publication by the Rabbinical Assembly and United Synagogue of America improved upon previous inadequate editions, yet fell short in key areas of traditional practice. Through careful comparison with established Jewish prayer customs, particularly those in English synagogues, Roth identifies critical gaps in the prayer book's content and structure. The absence of Torah and Haftarah readings for holidays, omission of Maaravoth for festival services, and problematic textual abbreviations emerge as primary concerns. Of particular significance is the truncation of hymn texts, which Roth argues fundamentally distorts the theological intentions of their original authors. His analysis demonstrates how these compromises affect worship experiences and suggests specific enhancements to strengthen the prayer book's traditional character. Implementation of these recommended changes would create a more comprehensive and authentically grounded resource for conservative Jewish liturgical practice across both American and English congregations.