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A parallel case.Just as a stone flung into the water becomes the centre and cause of many circles, and as sound diffuses itself in circles in the air: so any object, placed in the luminous atmosphere, diffuses itself in circles, and fills the surrounding air with infinite images of itself. And is repeated, the whole every-where, and the whole in every smallest part. This can be proved by experiment, since if you shut a window that faces west and make a hole 35 . .
43:35 : 6. Here the text breaks off.
43:36 : Compare LIBRI, Histoire des sciences mathématiques en Italie. Tome III, p. 43.