About
four o'clock
You 're some lover , all right ! '' The shallows ended in a rapid which they shot without more than the usual difficulties . They then had an hour of quiet rowing through gorges that grew more narrow and more dusky as they proceeded . About four o'clock snow began to fall . It was a light enough powder , at first , but shortly it thickened until it was impossible to guide the boats . They edged in shore where a ledge overhanging a heap of broken rock offered a meager shelter . Here they planned to spend the night .