Defcription of a Second Diving Machine, 17 1 



where the red fnow is found. But the a&ion of light, 

 perhaps, may firft give it its red colour; and in regard to it* 

 fpeciric gravitv, that is not furprifing, as by its long con- 

 tinuance on the fnow it mull, on account of the repeated 

 How meltingg, receive fuch an accumulation of particles as 

 to become denfe and heavy. 



M. deSauffure communicated his difcovery to M. Bonnet, 

 who advifed him to examine the powder with a microfcope, 

 in order to fee whether it exhibited the appearance of th« 

 farina of flowers. He did fo with the greateft care and the 

 beft glaffes, but he could not difcover the leaft regularity in, 

 its form. 



Though M. de Saufliire found this powder in different 

 places on the Alps, he however aflcs, whether it be very 

 common, and whether it be found on the high mountains 

 in different countries and different climates, fuch, for ex- 

 ample, as the Cordilleras? Thefe queftions deferve certainly 

 to be examined; and though it be probable that this powder 

 confifts of the farina of flowers, it is not altogether impofli- 

 ble that it may be an earth feparated by the fnow itfelf, and 

 poffeffing fome inflammable properties called forth by the 

 immediate action of the light and heat of the fun, which 

 fliines with fo much livelinefs in the pure air of thefe 

 elevated regions. 



XI. Defcription of an apparatus propofed to be applied fa 

 M. Kl ingert's Diving Machine, to enable it to be ufed at 

 greater Depths than it otherivife could. 



UOMF. doubts having occurred to the inventor of the div- 

 ing machine, defcribed in our laft Number, refpecting the 

 practicability of employing it at very confiderable depths, he 

 was induced to propofe an additional apparatus to render it 

 more extenfivcly ufeful. The defcription of this propofed 

 improvement we {hall give in his own words : " Suppofing 



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