Aet. _Plac._ iii. 1; 365. Anaxagoras: The shadow of the earth falls along this part of the heaven (the milky way), when the sun is beneath the earth and does not shed light on all things. iii. 2; 366. Anaxagoras and Demokritos: (Comets etc.) are due to the conjunction of two or more stars, and the combination of their rays. 367. The so-called shooting stars come darting down from the aether like sparks, and so they are immediately extinguished. iii. 3; 368. Anaxagoras: When the hot falls on the cold (that is, aether on air), it produces thunder by the noise it makes, and lightning by the colour on the black of the cloud, and the thunderbolt by the mass and amount of the light, and the typhoon by the more material fire, and the fiery whirlwind by the fire mixed with cloud. iii. 4; 371. Anaxagoras: Clouds and snow are formed in somewhat the same manner; and hail is formed when, already cooled by its descent earthwards, it is thrust forth from frozen clouds; and it is made round. iii. 5; 373. Anaxagoras: (The rainbow) is a reflection of the sun’s brightness from thick cloud, and it is always set opposite the star which gives rise to the reflection. And in a similar way he accounts for the so-called parhelia, which take place along the Pontos. iii. 15; 379. Anaxagoras: (Earthquakes take place) when the air falls on the thickness of the earth’s surface in a sheltered place, and it shakes the surrounding medium and makes it tremble, because it is unable to effect a separation. iii. 16; 381. Anaxagoras: When the moisture which was at first gathered in pools was burned all around by the revolution of the sun, and the fresh water was evaporated into saltness and bitterness, the rest (of the sea) remained. Aet. _Plac._ iv. 1; 385. Anaxagoras: The Nile comes from the snow in Ethiopia which melts in summer and freezes in winter. iv. 3; 387. Anaxagoras et al.: The soul is of the nature of air. iv. 5; 392. The intelligence is gathered in the breast. The soul is imperishable. iv. 9; 396. Anaxagoras et al.: Sensations are deceptive. 397. Sensations arise part by part according to the symmetry of the pores, each particular object of sense corresponding to a particular sense (organ). iv. 19; 409. Anaxagoras: Sound arises when wind falls on solid air, and by the return of the blow which is dealt to the ear; so that what is called an echo takes place.