Darwin was able to observe dramatic and  exciting natural events in-person when in Brazil, and noted with great interest  an incident in which he had witnessed a vampire bat bite a horse, and made notes  on glow worms, butterflies and fungi.

达尔文在巴西时能够亲自观察戏剧性和令人兴奋的自然事件，并饶有兴趣地注意到他亲眼目睹吸血蝙蝠咬马的事件，并记录了萤火虫、蝴蝶和真菌。