The photographer's note-book and constant companion : containing 250 practical hints, formulae, expedients, etc., etc. (1897)
Lambert, F. C. (Frederick Charles) compiler · London : Hazell, Watson, & Viney Ld., 1, Creed Lane, Ludgate Hill · leaf 69
three thicknesses. This, of course, will fill your funnel ; but as the liquid has to be passed through three thicknesses on one side, it is rather a slow way of working. ^Secondly, you may quite as easily fold a paper that will act much quicker. Take your circular piece of paper, fold it in half,… … 63