PORTION OF THE COSMOS. THE SOLAR DOM AJN. 345 



additional remarks on the red or roseate appearances referred 

 to in pages 278 280 of the English translation. The-impor- 

 tant phenomena presented by the solar eclipse of the 28th 

 July, 1851, which was total in the East of Europe, have added 

 fresh force to the opinion expressed by Arago in 1842, that 

 the red mountain- or cloud-like projections on the margin -of 

 the darkened solar disk belong to the gaseous outermost enve- 

 lope of the Sun( 545 ). These projections were gradually 

 uncovered by the receding west limb of the Moon as that 

 body continued its course to the eastward (Annuaire du Bu- 

 reau des Longitudes pour 1852, p. 457) , and, on the other 

 hand, disappeared on the opposite side as they were gra- 

 dually covered by the advancing eastern limb of the Moon. 



The intensity of the light of these marginal projections 

 was so considerable that it was possible to recognise them 

 in the telescope through thin veiling clouds, and even with 

 the naked eye within the corona. 



The shape of some of these mostly ruby- or peach-red forms 

 was seen to undergo rapid and sensible alteration during the 

 short continuance of the total eclipse : one of the projec- 

 tions appeared bent at the top, and showed itself to many 

 observers as an overhanging column of smoke in proximity 

 to a freely suspended detached cloud ( 546 ). The elevation 

 of the projections was estimated for the most part at from 

 1' to 2' : in one case it seems to have been even greater. 

 Besides these pointed elevations, of which from three to live 

 were counted, there were also seen long, narrow, crimson- 

 coloured bands, often dentated at the edges, appearing as if 

 resting against the margin of the Moon ( 547 ). 



The part of the Moon's limb which was not projected on 

 the Sun's disk ( 548 ) was again most distinctly seen. 



