 ... like pumice stone, only, it has the whiteness of porcelain, graduating however into light grey, and other shades, as it recedes from the intense heat. In a few instances I obtained upon the charcoal, when this substance terminated both poles, distinct,...  The Edinburgh Philosophical Journal - Page 1811823Affichage du livre entier - À propos de ce livre
 | 1823 - 506 pages
...little out of the focus of heat around the zinc pole, and occasionally exhibits the appearance of afrit of white enamel, or looks a little like pumice stone,...me to make, and I must in the mean time admit the possibility that alkaline and earthy impurities may have contributed to the result. " In one instance... | |
 | 1823 - 506 pages
...little out of the focus of heat around the zinc pole, and occasionally exhibits the appearance of afrit of white enamel, or looks a little like pumice stone,...me to make, and I must in the mean time admit the possibility that alkaline and earthy impurities may have contributed to the result. " In one instance... | |
 | Thomas Gill (patent-agent) - 1823 - 492 pages
...occasionally exhibits the appearance of a frit of white enamel, or looks a little like pumice-stone; only it has the whiteness of porcelain, graduating,...me to make; and I must, in the mean time, admit the possibility, that alkaline and earthy impurities may have contributed to the result. In one instance,... | |
 | Thomas Curtis (of Grove house sch, Islington) - 426 pages
...extravagant to ask whether this white frit and these limpid spheres could arise from carbon, volatilised in a white state even from charcoal itself, and condensed...analogous to the diamond. The rigorous and obvious experiment* necessary to determine this question it is not now practicable lor me to make; .c-'l 1... | |
 | 1838 - 1014 pages
...when this substance terminated both poles, distinct limpid spheres, and at other times they altered to the frit like beads on a string. Had we not been...to make ; and I must, in the mean time, admit the possibility that alkaline and earthy impurities may have contributed to the result." PLBMBBRY ; the... | |
 | Edgar Fahs Smith - 1917 - 540 pages
...this white frit and these limpid spheres could arise from carbon, volatilized in a white state even charcoal itself, and condensed in a form analogous...me to make, and I must in the mean time admit the possibility that alkaline, and earthy impurities may have contributed to the result. In one instance... | |
 | 1823 - 460 pages
...interesting to know, whether the limpid globules are also magnetic, but this trial I have not yet made. I have already stated, that the white fume mentioned...even from charcoal itself, and condensed in a form analagous to the diamond. The rigorous and obvious experiments necessary to determine this question,... | |
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