The quote reflects on the social behaviors of herd animals, particularly emphasizing the instinctual urgency and chaos that ensue when they perceive a threat, such as fire. In the wilds of the American West, animals like the Black Port act quickly and en masse to escape danger, often leading to a frenzied rush that can result in individuals trampling one another without a second thought. This highlights the instinct for survival that overrides individual compassion in high-stress situations.

Herman Melville, in his work "Moby-Dick, or, the Whale," uses this imagery to explore themes of instinct and the darker aspects of collective behavior. The frantic response of these creatures serves as a metaphor for human reactions to fear and crisis, suggesting that even in the face of danger, the instinct to save oneself can lead to tragic consequences for others within the group.