Monthly microscopical journal: transactions of the Royal Microscopical Society, and record of histological research at home and abroad . ns great care would have to be exercised in determiningapertures truly; remembering such things, e. g. as the differencewe may be bringing in, without thinking, by adding on water anda covering glass which changes the true front or first refractingsurface to another one altogether. And other such precautions;for in measuring apertures, notions are still very loose, and resultssometimes given which are wholly untrue. So much is plain, that the cause thus assig
Monthly microscopical journal: transactions of the Royal Microscopical Society, and record of histological research at home and abroad . ns great care would have to be exercised in determiningapertures truly; remembering such things, e. g. as the differencewe may be bringing in, without thinking, by adding on water anda covering glass which changes the true front or first refractingsurface to another one altogether. And other such precautions;for in measuring apertures, notions are still very loose, and resultssometimes given which are wholly untrue. So much is plain, that the cause thus assigned is a vera causain Newtons sense of the phrase; that is to say, the thing assignedas the cause is a really existing thing. And on the face of thecalculation it is also clear that some difierence is truly accountedfor by its action. Whether the whole is accounted for by it is thequestion to the answer of which this investigation supphes only thefirst of two steps. If on dissecting the apertures for comparison itshould be found inadequate, then some other cause will have to besought for, not instead of this but in addition to FSiiithwaitt id ai tiat. Jt SdIi. fnnlcriatiTm. filler0 s c Q-pic al Joiim ?1 JxmelJLg 14. PlIXYI
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Keywords: ., bookcentury1800, bookdecade1860, bookpubli, booksubjectmicroscopy
