98 ASSOCIATIONS AND MIGRATIONS 



at Annamaboo, on the Guinea Coast, after a tornado. 

 The wind veered to the northward, and blew fresh 

 from the land, with thick mist, which brought off 

 from the shore so many of these insects, that for one 

 hour the atmosphere was so filled M'ith them, as to 

 represent a snow storm driving past the vessel at a 

 rapid rate, which was lying at anchor about two miles 

 from the shore." 



In the Journal de Rouen, we are informed that 

 several persons testified, they had witnessed, at Sotte- 

 villes-les-Rouen, a rain of white butterflies, which 

 fell in abundance towards the close of the day. This, 

 no doubt, proceeded from one of these flights, and 

 the insects, in all probability, becoming paralyzed, 

 from mounting too high in the atmosphere. 



An extensive migration, but somewhat different, 

 was noticed in one of the Cantons of Switzerland. 

 Madame de Meuran Wolff, and her family, who were 

 residing at Grandson, on the Lake of Neufchatel, one 

 day noticed, in the garden, an immense flight of 

 butterflies, of the species called Painted Lady, pro- 

 ceeding with great rapidity. They flew close together, 

 in the same direction, from south to north ; and, 

 although repeatedly approached, they exhibited no 

 signs of fear, nor were they diverted from their 

 straightforward course. This extraordinary flight 

 consisted of a column of from ten to fifteen feet in 

 breadth, and continued, without interruption, for 

 upwards of two hours. Although the garden was 

 plentifully supplied, at the time, with melliferous 

 flowers, not a single butterfly was seen to alight, but 



