CXXXIII. Professor Morse--His Electro-Magnetic Telegraph 578 CXXXIV. Frémont's Second Expedition 579 CXXXV. Texas Annexation--Secret Origin--Bold Intrigue for the Presidency 581 CXXXVI. Democratic Convention for the Nomination of Presidential Candidates 591 CXXXVII. Presidential--Democratic National Convention--Mr. Calhoun's Refusal to Submit his Name to it--His Reasons 596 CXXXVIII. Annexation of Texas--Secret Negotiation--Presidential Intrigue--Schemes of Speculation and Disunion 599 CXXXIX. Texas Annexation Treaty--First Speech of Mr. Benton against it--Extracts 600 CXL. Texas or Disunion--Southern Convention--Mr. Benton's Speech--Extracts 613 CXLI. Texas or Disunion--Violent Demonstrations in the South--Southern Convention proposed 616 CXLII. Rejection of the Annexation Treaty--Proposal of Mr. Benton's Plan 619 CXLIII. Oregon Territory--Conventions of 1818 and 1828--Joint Occupation--Attempted Notice to Terminate it 624 CXLIV. Presidential Election 625 CXLV. Amendment of the Constitution--Election of President and Vice-President--Mr. Benton's Plan 626 CXLVI. The President and the Senate--Want of Concord--Numerous Rejections of Nominations 629 CXLVII. Mr. Tyler's Last Message to Congress 631 CXLVIII. Legislative Admission of Texas into the Union as a State 632 CXLIX. The War with Mexico--Its Cause--Charged on the Conduct of Mr. Calhoun--Mr. Benton's Speech 639 CL. Mr. Polk's Inaugural Address--Cabinet 649 CLI. Mr. Blair and the Globe superseded as the Administration Organ--Mr. T. Ritchie and the Daily Union substituted 650 CLII. Twenty-ninth Congress--List of Members--First Session--Organization of the House 655 CLIII. Mr. Polk's First Annual Message to Congress 657 CLIV. Death of John Forsyth 659 CLV. Admission of Florida and Iowa 660 CLVI. Oregon Treaty--Negotiations commenced, and broken off 660