 If it contained cotton, the cotton threads are found to be wanting in that portion which had been immersed in the acid ; and by counting the threads of the two portions of the sample, its quantity may be very readily estimated. " If the sample has been...  The Chemical Gazette - Página 1401847Vista completa - Acerca de este libro
 | William Francis, Henry Croft - 1847 - 512 páginas
...again with water. After it has been freed from the greater portion of the moisture by gentle presstire between blotting-paper, it is dried. If it contained...transparent, while the linen threads still continue white and opuke. The sulphuric acid acts upon the flax threads of pure linen, and the sample is even somewhat... | |
 | 1847 - 906 páginas
...mass produced from the cotton : this solution may be expedited by a gentle rubbing with the fingers ; but since it is not easy to remove the whole of the...transparent, while the linen threads still continue white and opaque. The sulphuric acid acts upon the flax threads of pure linen, and the sample is even somewhat... | |
 | William Newton - 1847 - 526 páginas
...mass produced from the cotton ; this solution may be expedited by a gentle rubbing with the fingers; but since it is not easy to remove the whole of the...transparent, while the linen threads still continue white and opaque. The sulphuric acid acts upon the flax threads of pure linen, and the sample is even somewhat... | |
 | 1847 - 634 páginas
...readily estimated. If the sample has been allowed to remain too long in sulphuric acid, the linen threadi likewise become brittle, or even eaten away ; if it...transparent, while the linen threads still continue white and opaque. The sulphuric acid acts upon the flax threads of pure linen, and the sample U even somewhat... | |
 | 1847 - 654 páginas
...very readily estimated. If the sample has been allowed to remain too long in sulphuric acid, the Unen threads likewise become brittle, or even eaten away...a uniform manner ; whereas, in the mixed textures, tbe cotton threads are already perfectly transparent, while the linen threads still continue white... | |
 | William Newton, Charles Frederick Partington - 1847 - 524 páginas
...away ; if it were not left a sufficient time in it, only a portion of the cotton threads have bcen removed : to make this sample useful, it must be washed,...repeated. When the tissue, under examination, consists of jiirrb linen, the portion immersed in the acid likewise becomes transparent, but more slowly, and in... | |
 | 1847 - 448 páginas
...a portion of the cotton threads have been removed : to make this sample useful it must be Avashed, dried, and the immersion in the acid repeated. When...transparent, while the linen threads still continue white and opaque. The sulphuric acid acts upon the flax threads of pure linen, and the sample is even somewhat... | |
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