-The poet describes Sam McGee's appearance as "a palsied skeleton, Shot through with blue and white." This image conveys the speaker's shock and horror at the sight of Sam's frozen and emaciated body.
-The speaker describes the cremation of Sam McGee as a "roaring furnace of fire," which contrasts with the frigid Arctic landscape. This image conveys the intensity of the fire and the speaker's determination to give Sam a proper send-off.
-The speaker describes Sam's spirit as "a puff of smoke" that "vanished in air." This image conveys the ephemerality of life and the speaker's sense of loss.
-The speaker describes Sam's grave as "a pile of snow" that will "melt away in the summer sun." This image conveys the temporary nature of death and the speaker's hope that Sam will find peace in the afterlife.
These images create a vivid and memorable picture of Sam McGee's cremation and the speaker's emotional response to his death.