We have discovered a new high-T c oxide superconductor of the Bi-Sr-Ca-Cu-O system without any rare earth element. The oxide BiSrCaCu2O x has T c of about 105 K, higher than that of YBa2Cu3O7 by more than 10 K. In this oxide, the coexistence of Sr and Ca is necessary to obtain high T c.

The geomagnetic solar quiet daily variation field, Sq, was studied separately for three longitudinal zones during each of three seasons using IGY data obtained at 69 stations. Equivalent external (overhead) and internal (induced within the earth) electric current systems responsible for Sq variations with respect to dip latitude were estimated by the method of spherical harmonic analysis in each zone for each season. Particularly interesting results are the large current intensity during equinoxes and the asymmetry between the northern and southern hemispheres for equinoctial months and even for the yearly average.

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