Show bubble in a sapphire there Is exhibited in the british museum a sapphire weighing karats carats and containing a bubble that tan 1 l appears and disappears with chanca 3 of df temperature it is believed thata cavity in the kein ein cne encloses loses t n quantity of carbonic acid gas under great pros ure sure when the temperature temper iture is auch as to io correspond corr espind ith rho alif crit leal P point nt for tile gas iii under iler alln pres firk to lliel ci 11 14 1 W ali 1 11 in ais t bril hup 1 pi H i ain 11 icille hii f it I 1 iKin IV ind 1111 arll 11 ll i is 1 |