Page:Book of record of the time capsule of cupaloy (New York World's fair, 1939).djvu/53

 It should be noted that according to the present system in use in this country, the distance from the Equator to either pole is divided into 90 degrees [°] and each degree is equal to 60 minutes [′] or 3600 seconds [″]. The unit of length is the meter [3.28083 feet]. At station Forest Park one second of latitude equals 30.846 meters, and one minute equals 1850.77 meters.

A more detailed description of the triangulation net of the United States and of the North American Datum of 1927 will be found in the Capsule.



N ORDER that peoples who live long after us may see our world somewhat as we see it, and understand at least some of the viewpoints of our contemporary world, three men, chosen for their high reputation among us, have summed up in their own words the strengths and weaknesses of our age, pointed out the discernible trends of human history, & envisioned something of the future. The messages follow. [ 45 ]