290 VOICES FEOM THE WOODLANDS. 



Tame ducks begin to sit. 



Wild ducks in abundance. 



Swans and daker-hens. 



Rivers are unbound and ice floats down. 



And so unvarying are the natural phenomena of the month, 

 that the rivers of Upsal were never frozen beyond the 

 19th of April, according to the observations of 0. Celsius- 

 sen, during the course of seventy years. 



Linnaeus, who traversed the wildest parts of Lapland 

 in quest of plants, found the round-eared sallow on the 

 verge of perpetual snow, the favourite resort of ptarmigans. 

 These birds are believed to feed upon the leaves, and hence, 

 according to the testimony of Wahlenberg, the plant is 

 called the ptarmigan leaf. 



COMMON OSIER. 



Proper osiers are distinguished from sallows, equally by 

 their long, straight, flexible, and mostly tough twigs, and 

 generally sessile germens, with elongated styles and stigmas. 



