A graceful German lady, Mademoiselle Mérian, having been transplanted to these zones of fire, has related in naïve language the alarm which she experienced on seeing their insect wonders. The daughter and grand-daughter of excellent and laborious engravers, herself an artist and of well-informed mind, she has produced, in Latin, Dutch, and French, an admirable and picturesque work on the Insects of Surinam. The learned lady, in an exemplary life of misfortunes and virtues, had but one weakness (who has not one?)--the love of Nature. She quitted Germany for Holland, attracted by its unique and brilliant collections of the treasures of the two worlds. Then, as these did not suffice her, she visited Guiana, where she painted for several years. She combined in the same picture,--an excellent method,--the insect, the plant on which it lives, and the reptile which lives on the insect. Thoroughly conscientious, she sought out and posed her formidable models, of which, nevertheless, she was much afraid. Once, when the Indian savages had brought her a basket of insects, she was sleeping after her work. But in her chaste slumber she was disturbed by a strange dream. She thought she heard a harp, a melody of love. The melody grew inflamed; it was no longer a song, but an intoxication. All the room seemed filled with fire. She woke, and found her dream was true. The basket was the lyre, the basket was the volcano. She quickly saw that the volcano did not burn. The captives were fire-flies (_fulgores_); their song was an epithalamium, and their flame the flame of love. * * * * * In the tropical countries the stranger generally travels by night to avoid the heat. But he would not dare to enter the populous shadows of the forest-depths, were he not reassured by the luminous insects which he sees dancing and fluttering in the distance, and anon planted on the neighbouring bushes. He takes them for his companions, and fixes them in his shoes, partly to show him the path, and partly to keep off serpents. And when the morning breaks, he gratefully and carefully replaces them among the thickets, and restores them to their amorous work. There is a pretty Indian proverb: "Carry away the fire-fly, but return it to the place from which thou carriedst it." Who can fail to be affected by their flame? It follows the movement of life, it flares and wanes in cadence with the ebb and flow of our respiration; it beats in exact accord with the rhythm of our heart. It expands or contracts in harmony with it, and the trouble of its emotion agitates also that tremendous torch.