...concerning these observations — " the colour thus contributed by different objects to flame affords in many cases a ready and neat way of detecting extremely minute quantities of them." Again, Fox Talbot writes as follows in 1826: — "The red fire of the theatres gave a most beautiful...

...colourations which different " saline bodies," " in general," impart to flames, he observes that " the colours thus communicated by the different bases...way of detecting extremely minute quantities of them ;" and he assigns also reasons to show that " these tints arise from the molecules of the colouring-matter...

...exhibited also when any of the salts in question are put (in powder) into the wick of a spirit lamp. The colours thus communicated by the different bases...of detecting extremely minute quantities of them. The pure earths, when violently heated — as has been recently practised by Lieutenant Drummond, by...

...spirit-lamp. He offers a distinct suggestion of the employment of flame colorations in chemical analysis : " The colours thus communicated by the different bases...of detecting extremely minute quantities of them." 31 Fox-Talbot, whose name will always be remembered in connection with the beautiful art of photography,...

...spirit-lamp" — „The colours thus communicated by the different bases to flame afford, in niany cases, a ready and neat way of detecting extremely minute quantities of them" . . . „The pure earths, when violently heated, äs has recently been practised by Lieutenant Drummond,...

...Herschel described the spectra of strontium, copper, and of some other substances, remarking that " The colours thus communicated by the different bases...of detecting extremely minute quantities of them." A few years later, Fox TaIbot described the method of obtaining a monochromatic flame, by using in...

...1823, and made two significant observations: " The colours thus communicated by the different gases to flame afford, in many cases, a ready and neat way...of detecting extremely minute quantities of them," and " no doubt these tints arise from the molecules of the colouring matter reduced to vapour, and...

...made two significant observations : " The colours thus communicated by the different gases to Same afford, in many cases, a ready and neat way of detecting extremely minute quantities of them," and " no doubt these tints arise from the molecules of the colouring matter reduced to vapour, and...

...account of their volatility. He also adds the distinct statement, that " the colours thus communicated by different bases to flame afford in many cases a ready...of detecting extremely minute quantities of them." ROYAL SOCIETY. [Continued from p. 77-] November 22, 1860. — Major-General Sabine, RA, Treasurer and...

...spectra of flames was taken up from the early 1820s by Sir John Herschel (1792-1871). He wrote in 1823: The colours thus communicated by the different bases...of detecting extremely minute quantities of them' (3). Herschel was therefore one of the first to suggest that flame colours could be used for chemical...