Part 34

Planetoids, 196, 197, 229.

Planets: condition, 97; pulverized, 100; and moon, 117–174; isolated, 176. (See Jupiter, Mars, Mercury, Saturn, Sirius, Stars.)

Plants, 72, 73. (See Flowers.)

Plato Crater, 147, 148, 151, 152.

Pleiades, 17, 231, 245. (See Lost.)

Plume, The, 19, 23, 24, 55.

Pointers, 208. (See Dipper.)

Poison, 222.

Polariscope, 49.

Polarization, 18.

Polarizing Eye-piece, 14, 18.

Polar Star, 230. (See Great Bear.)

Polyp, 152.

Pores, 24.

Pouillet’s Invention, 93.

Printing, indebtedness to the sun, 74.

Prism, 63, 64. (See Colors, Scarlet.)

Proctor’s Observations, 14, 59, 69, 87.

Prospero’s Wand, 221.

Ptolemy, 155, 161.

Pyramids, 99, 117, 233, 234. (See Egypt.)

Pyrheliometer, 93.

Race, simile, 179.

Radiant Energy, 71, 74; rate, 104.

Radiation, 101, 108.

Railway Explosion, 182, 183.

Railway, The, 156.

Rain, 111.