When Hamlet refers to Ophelia as a nymph, this is an example of an allusion. And allusion is an indirect reference to an object, place, person or idea that belongs to a different context. Usually, the author references this indirectly and it is up to the reader to make the connection. In this case, the reference is to the mythological figure of the nymphs.
The Call of the Wind reflects the travel from California to the Klondike during 1896 to 1899, <u>Gold Rush</u>. Buck refers to the landscape as arid at times and some other times better. He also watches other dogs like pugs or the Mexican hairless dogs, that many travelers carried with them on the journey to seeking for gold.
