EXPLORATIONS AMONG THE WHITE MOUNTAINS. 



115 



miles ; at the Lizzie Bourne monument, 40 ; at tlie Gulf house ruins and below, fully 

 60, thus reversing the order of things in regard to wind. Thermometer on the sum- 

 mit, 28"; frost-work fornring some distance below tlie monument. At the Gulf tank- 



Fig. 14. — CORONA SEEN BY HITCHCOCK ANT) NELSON, APRIL 28. 



The dark cone is shadow of observer with glory about the head. Above the foreground is the shadow of the 

 mountain, while the large circle is the colored prism or corona resting on cloudSj and partially obscuring the two 

 shadows. 



when the sun came out, as it did several times, the ice on my cap would thaw com- 

 pletely ; then, while the cloud was passing, icicles two inches in length would form on 

 the visor. It was difficult to walk or even stand against the wind below the Gulf house 

 ruins. Returning, the wind was not so violent; rain as far as the plateau, where they 

 collect water for the engine in summer ; mist on tlie summit, with thermometer 

 28° at 6: 50. 



April 30. We have had the past month more clouds than sunshine, more snow than 

 rain ; light winds and few gales, the clouds often dense on the summit when clear 

 below. Now only on the higher peaks, in the deep ravines, and a few places on wooded 

 slopes is there snow. 



May 2. Taking advantage of the day, Mr. Holden and myself set out for Tucker- 

 man's ravine. Found more snow than on the gth ult. Sunlight bright and warm 

 there, but over Washington a dense cloud most of the afternoon. The air spring-like, 

 as were the surroundings ; little snow except at the head of the ravine, where the arch 

 will be looked for in vain next summer, unless May makes up for the short-comings of 



