DUST STORM. 81 



0. Claytoniana, T^- 



Low gi'ounds. 



0. cinnamomea, L. 

 Swamps, &c. 



Botrychium ternatum, Eaton. (Moonwnrt.) 

 vars. Lunaroides, obliquum, ami dissectum. 

 Dry I'icli woods. 



B. Virginicum, Swartz. 



Rich woods. 



Ophioglossum vulgatum, L. (Adder tonrjue.) 

 Bogs and meadows. 



« ♦ « 



DUST STOEM IN VERMONT. 



FEB. 12, 1«7(). 



BY, HIRAM A. CUTTING, A. M., M. D. 

 Read before The Dartmouth Microscope Club, Oct. 26, 1870. 



The evening of Feb. 11,1870, closed in cloud}' with a 

 breeze from the north east, barometer falling, and every- 

 thing appearing to indicate a storm. It was unnsually cold 

 for cloudy weather yet the clouds seemed dark and heavy. 

 At about eleven the wind was fairly in the east and blew 

 strongly during the night. About five o'clock on the 

 morning of the 12th, it commenced snowing and the wind 



6 



