11 
two or three of the vertical plates of ice were grown together at 
their outer edges, making an appearance like a clam or mussel 
shell. Some-of them were folded back on each other, like the old- 
fashioned, ribbon-like, Christmas candy. Some were waved and 
curled like potato chips. 
Frost crystals on Dittany stem. 
Two crystals fused at right angles. 
It was noticeable that most of them had grown out in the 
Same general direction, toward the downhill slope of the old 
toad, which ran east. Whether this was due to the direction of 
the wind at the time of freezing, or to some downhill draft in the 
narrow valley, is a question. The temperature had fallen sud- 
denly during the night from a point above freezing at sunset to 
about 25° at dawn, and during the day it fell a few degrees 
lower, The ground had been wet from recent rains, and the 
dead leaves, recently fallen, and the dried stalks of various her- 
baceous plants had absorbed a lot of moisture, and were frozen 
