MAKCH, 1911 continued. 

 March llth, 1911 continued. 



4 p.m. Wind about the same. Drift heavy as before. No snow. The clouds are assuming 



definite forms. The snow cloud haze is still uninterrupted above, but the lowermost 

 portion of it has assumed definite shape. 



There is a radiant point to the S.E. from which spring, like a huge bunch of Prince 

 of Wales's feathers, clouds which at the bottom have the form of huge, whale-backed 

 Cumulo-Nimbus, and above layer after layer of Cirrus-shaped Nimbus are piled, the whole 

 merging finally into the cloud haze similar to that over all the rest of the sky. Between 

 the rays of the radiant the cloud appeared much lighter, almost white in fact. 



Cape Adare is crowned by the easternmost ray which takes the form of a huge 

 mushroom-shaped Nimbus cloud. This covers the peninsula down to 1,000 feet above 

 sea -level. These clouds appeared to be moving almost imperceptibly from the S.E., but 

 of that I cannot make certain, and Campbell said at 3 o'clock that he thought they were 

 moving from the N.W. 



6 p.m. Clouds much the same, but the Cumulo-Nimbus much darker and denser. Heavy 

 snow is evidently falling to the S. and W., for drift could not account for the dense 

 shrouding of the mountains. There is less drift here and the wind is visibly dropping, 

 though there are still some gusts which are as strong as ever. The lulls are longer and the 

 wind has much less force in them, force 3 to 6. 



March 12th, 1911. 



10 a.m. There was an E.S.E. wind blowing at 8.45 this morning, when I turned out. Its 

 force was about 2 to 3. At the 10 o'clock observation the wind had swung to the N.W. 

 (force 1 to 2), and a light granular snow was falling. 



The barometer during the night fell fairly rapidly and is now recovering itself. The 

 temperature has remained constant within 3 or 4 (20 to 24 F.). The sky is once more 

 covered with the indefinite snow-haze. 



12 noon. The clouds are getting a little thinner towards the zenith and there is a suggestion 

 of an upper layer of Cirro-cumulus. Snow is still falling in small indefinite crystals of 

 needle-shape, but they are so coated with accretionary snow as to make their elucidation 

 impossible. 



1 p.m. Clouds are breaking into distinct heavy Stratus with snow scud beneath them. All 

 are moving from the N., the lower ones quicker than the upper ones. Some blue sky is 

 showing to the W. I recognised crystals of the following types in the snow which fell : 

 EII 2 and El 2, FII 9, FII 10 and FII 5. Besides these were many combinations between 

 plates and stars which are not in the photographs. The dumbbell crystal (FII 9 duplicated) 

 was very common. This is an entirely different type of snow from the fine-grained snow 

 which was falling at the last observation. 



2.30 p.m. Snow clouds closed in again and heavy snow falling in flakes and grains. 



The flakes consist of a few very large and perfect crystals of types FI 4 and 5, and the 

 grains are in shape like a ball with spikes sticking out at regular intervals. 



The lower three or four thousand feet of the Western Mountains are showing. No 

 wind. 



5 p.m. Snow almost ceased. About -| inch has fallen to-day. 



Still calm. 



8 p.m. Snowing again in large flakes and has been doing so since 6 p.m. 



About | inch of snow altogether to-day. No change in the clouds and still quite 

 calm. 



10 p.m. Heavy Nimbus to N. ; cloud haze thinner towards the zenith. Luminosity suggests 

 Aurora to N.W. and N.E. Only a few crystals of snow are falling. About 1 inch of snow 

 to-day, but possibly more as some has been removed by thawing. Calm. Temperature 

 falling slowly but evenly. 



476 



