34 COLOUR OF THE SEA.
up. " You look warm," said she, " with your run : let us rest a little while on one of these friendly seats."
" Oh! mamma," said Edward, " how very, very beautiful the sea looks this morning : but what can be the reason that the colour of it is so different in different places?"
" I believe," said Mrs. Ashton, " it is partly occasioned by the inequalities in the surface of the earth beneath the water, and partly by the different colour of the soil : clouds passing over it may also have some effect upon it."
Edward said, he had been thinking a great deal of the different uses of the sea, and still he thought there must be some that had never occurred to him.