REPORTS OF CONGRESS ON THE SUBJECT OF ELECTRO MAGNETIC TELEGRAPHS.

Letter from the Secretary of the Treasury, transmitting a

Report upon the Subject of a System of Telegraphs for the

United States, December, 11, 1837, 67

Circular to certain Collectors of the Customs, Commanders of

Revenue Cutters, and other persons, March 10th, 1837, 68

Letter from S. F. B. Morse to the Secretary of the Treasury,

September 27, 1837, 69

Letter from S. F. B. Morse to the Secretary of the Treasury,

November 28th, 1837, 73

Letter from S. F. B. Morse to the Editors of the

Journal of Commerce, Sept’r 4, 1837, 74

Specimen of Telegraphic Writing made by Means of Electricity,

at the distance of one-third of a mile, 75

Report of the Committee on Commerce to the House of

Representatives, April 6, 1838, 76

Report of the Franklin Institute, Philadelphia,

February 8, 1838, 79

Letter from S. F. B. Morse to the Hon. F. O. J. Smith,

February 15, 1838, 80

Letter from S. F. B. Morse to the Hon. F. O. J. Smith,

February 22, 1838, 82

Report of the Committee on Commerce to the House of

Representatives, Dec’r 30, 1842, 83

A Bill to test the Practicability of Establishing a System

of Electro Magnetic Telegraphs by the United States, 87

Letter from Professor Henry to Professor Morse,

February 24, 1842, 87

Report of the American Institute on the Electro Magnetic

Telegraph, Sept’r 12, 1842, 88

Letter from S. F. B. Morse to the Hon. C. G. Ferris,

December 6, 1842, 89

Communication from the Secretary of the Treasury,

transmitting the Report of Professor Morse, announcing

the Completion of the Electro Magnetic Telegraph, between

the Cities of Washington and Baltimore, June 4, 1844, 97

Letter from S. F. B. Morse to Hon. McClintock Young,

June 3, 1844, 98

Letter from the Secretary of the Treasury, transmitting

a Letter from S. F. B. Morse, relative to the Magnetic

Telegraph, December 23, 1844, 101

Letter from S. F. B. Morse to the Hon. G. M. Bibb,

December 12, 1844, 101

Report of the Committee of Ways and Means to the House of

Representatives, March 3, 1845, 107

HISTORY OF TELEGRAPHS EMPLOYING ELECTRICITY IN VARIOUS WAYS FOR THE

TRANSMISSION OF INTELLIGENCE.

Discoveries in Electricity, 115

Electrical Feast on the Schuylkill, 119

Dr. Franklin’s Experiment in Drawing Electricity

from the Clouds, 120

Lomond’s Electrical Telegraph, (1787,) 121

Reizen’s Electric Spark Telegraph, (1794,) 121

Dr. Salva’s Electric Spark Telegraph, (1798,) 123

Discovery of Galvanism, (1790,) 123

Discovery of the Decomposition of Water by the Agency of

the Galvanic Pile, 125

Samuel Thomas Soemmering’s Voltaic Electric Telegraph, (1809,) 126

Extract from the Journal of the Franklin Institute in relation

to the Use of Galvanism for Telegraphic Purposes, (1816,) 128

Ronald’s Electric Telegraph, (1816,) 130

Discovery of Electro Magnetism, (1819,) 132

Extract from a Work on Electro Magnetism, published by

Jacob Green, M. D. (1827,) 134

Triboaillet’s Proposition, (1828,) 135

Fechner’s Suggestion, (1829,) 135

Discovery of Magneto Electricity, (1831,) 135

Saxton’s Magneto Electric Machine, 142

Dr. Page’s Magneto Electric Machine, 145

Pole Changer, 149

Morse’s American Electro Magnetic Telegraph, (1832,) 152

Schilling’s Electric Telegraph, (1833,) 155

Gauss and Weber’s Electro Magnetic Telegraph, (1833,) 156

Experiments of Messrs. Taquin & Ettieyhausen, (1836,) 159

Vail’s Electro Magnetic Printing Telegraph, (1837,) 159

Wheatstone’s Electric Needle Telegraph, (1837,) 171

Steinheil’s Electric Telegraph, (1837,) 179

Masson’s Electric Telegraph, (1837,) 182

Davy’s Needle and Lamp Telegraph, (1837,) 182

Alexander’s Electric Telegraph, (1837,) 184

M. Amyot’s Suggestion of an Electric Telegraph, (1838,) 186

Edward Davy’s Electric Telegraph, (1838,) 187

Bain’s Printing Telegraph, (1840,) 199

Wheatstone’s Rotating Disc Telegraph, (1841,) 203

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