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| | Seismology |
 | | Travelling through Mexico and Central and South America, José de Acosta (1539-1600), for example, described and tried to explain variations of the magnetic declination, the motions of the oceans, earthquakes, volcanic eruptions, and the tides and causes of the winds. |
 | | Continuing in this tradition Jesuit Missionaries of the eighteenth century engaged in cartographic work, conducted geodetic measurements, measurements of the magnetic inclination and declination, and made careful notations of other geophysical observations in China, Tibet, the Middle East, and in Central and South America. |
 | | The beginning of modern Jesuit observatories must be placed in 1838 with the founding of the first two observatories of Stonyhurst in England and Georgetown in Washington, D.C. By 1930 there were thirty in operation throughout the world. |
| www.faculty.fairfield.edu /jmac/sj/geophysics.htm (2661 words) |
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