Lecture on Switzerland

Discussion on the Magnetic and Meteorological Observations Made at the Girard College Observatory, Philadelphia in 1840, 1841, 1842, 1843, 1844, and 1845: Investigation of the eleven year period in the amplitude of the solar-diurnal variation and of the disturbances of the magnetic declination, Part 1

On the Tides of the Atlantic and Pacific Coasts of the United States, the Gulf Stream, and the Earthquake Waves of December, 1854

Report on Education in Europe: To the Trustees of the Girard College for Orphans

Discussion of the Magnetic and Meteorological Observations: Made at the Girard College Observatory, Philadelphia in 1840. 1841, 1842, 1843, 1844, and 1845. Investigation of the solar diurnal variation in the magnetic declination and its annual inequality, Part 2

Discussion of the Magnetic and Meteorological Observations: Made at the Girard College Observatory, Philadelphia in 1840. 1841, 1842, 1843, 1844, and 1845. Investigation of the influence of the moon on the magnetic declination, Part 3

Discussion of the Magnetic and Meteorological Observations Made at the Girard College Observatory, Philadelphia, in 1840, 1841, 1842, 1843, 1844, and 1845: Volume 2

Letter, Transmitting a Second Report on Inquiries and Researches Relating to Hydrometers, &c

Records and Results of a Magnetic Survey of Pennsylvania and Parts of Adjacent States: In 1840 and 1841, with Some Additional Records and Results of 1834-35, 1843 and 1862, and a Map, Volume 13, Issue 8

Report on education in Europe to the trustees of the Girard college for orphans

Report on Education in Europe

Report upon the Sailing Directions for the Port of New York and its approaches, etc

Approximate Cotidal Lines of Diurnal and Semi-diurnal Tides of the Coast of the United States on the Gulf of Mexico. (Extracted from the American Journal of Science and Arts.) [With diagrams.).

Discussion of the Magnetic and Meteorological Observations: Made at the Girard College Observatory, Philadelphia in 1840. 1841, 1842, 1843, 1844, and 1845. Comprising parts VII, VIII, and IX : vertical force. 3rd section

Discussion of the Magnetic and Meteorological Observations: Made at the Girard College Observatory, Philadelphia in 1840. 1841, 1842, 1843, 1844, and 1845. Comprising parts X, XI, and XII : dip and total force. 4th section

Report on Education in Europe: To the Trustees of the Girard College for Orphans

Report on Education in Europe: To the Trustees of the Girard College for Orphans

Report on Education in Europe: To the Trustees of the Girard College for Orphans

Report on Education in Europe: To the Trustees of the Girard College for Orphans

Discussion of the Magnetic and Meteorological Observations Made at the Girard College Observatory, Philadelphia, in 1840, 1841, 1842, 1843, 1844, and 1845: Volume 2