Page 673 - 89 history of astronomy_opt

omy, 8-11 Gregory, J. and D., 87 Grimaldi,
113 Groombridge, S., 139 Grubb, 88, 89
Guillemin, 122 Guinand, 88
Hale, G. E., 101 Hall, A., 112 Hall, C.
M., 88 Halley, E., 19, 51, 58, 60, 61, 62, 63,
64, 79, 120, 122, 125, 129 Halley’s comet,
62-64 Halm, 85 Hansen, P. A., 3, 65 Hansky,
A. P., 100 Harding, C. L., 67 Heliometer, 83
Heller, 120 Helmholtz, H. L. F., 35 Hender-
673