SNOW

is not frozen rain, like hall orsleet, it is the effect of frost upon the water pour in the atmosphere. The well own hexagonal crystalline towers of ow are the forms a umed by the frozen pisture which crystallizes around the clei of dust present in the air. The ow-fall in Great Britain is slizht in comrison with that of continental areas of e same latitude, a fact which is due to e influence of the warm waters of the Jantic. Snow-drifts in sheltered ent- ‘Zs sometimes impede railway trafic, wever, and the snow-plough is familiar coon diatricts, The perpetual latence of snow above the altitude of the now-line '’ of mountains is the cause of wiern, and tho origin of most of the great ‘ers of the world. [s. 282]