1847 – Born on the 5th of January in New York City.
1868 – He was graduated at Harvard University.
1875 – Instructor of mining and metallurgy in the University of California.
1879 – Became connected with the United States Geological Survey.
– Placed in charge of the California division of geology.
1880 – Appointed special agent of the 10th census.
1882 – Appointed special agent in charge of the investigation of the precious-metal industries.
1885 – Wrote "Geometrical Form of Volcanic Cones".
– Notes on the Stratigraphy of California.
1886 – "Cretaceous Metamorphic Rocks of California.
– A Theorein of Maximum Dissipativity, which is a new fundamental law of mechanics.
– A New Law of Thermo-Chemistry, which embraces the previously known laws of this science and makes an important addition to them.
1919 – Died on the 20th of April, Washington, D.C.