"Though her voyage of twelve hundred miles extends from apple to orange, from clime to clime, yet, like any small ferry-boat, to right and left, at every landing, the huge ship still receives additional passengers in exchange for those that disembark; so that, though always full of strangers, she continually, in some degree, adds to, or replaces them with strangers still more strange; like Rio Janeiro fountain, fed from the Cocovarde mountains, which is ever overflowing with strange waters, but never with the same strange particles in every part."
I don't understand what "from apple to orange" exactly stands for. Does he mean from a city to another city?
Also is "from clime to clime", a sort of metonymy that is supposed to mean "from location to another"?
I don't understand why it is "to right and left" as opposed to "from right and left"? Wouldn't it make more sense to say from right and left the... ship... receives additional passengers?