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100 slides for Chant's 1930 astronomy handbook.
60. Why Saturn's rings show phases.
59. Saturn, drawing by Lowell.
58. Saturn and satellites, in small telescope.
57. Photograph of Jupiter. (Lowell Obs.)
Note: this image is a thumbnail only.
56. Jupiter's satellites on 6 successive days.
55. Jupiter, two drawings, showing moon and its shadow.
54. Drawing of Jupiter, showing flattening.
53. Jupiter as seen in a small telescope.
52. Moons of Mars orbits.
51. H. G. Wells's conception of the Martians. (Dudouyt)