The Scientific Proceedings of the Royal Dublin Society, Bind 11

acid aperture atmometer calcium cattle cent cerium chequer chloride colour cornea crystalline crystalline lens curve dew-point diameter didymium dilution distance Dublin electrodes Element and Intensity entoptic object entoptic phenomena Entoptiscope evaporation experiments flow glass Globigerina Ooze GOLD ELECTRODES gold lines grams per gram hydrochloric acid impurities inch Intensity and Persistency lanthanum length lens light Linear Measure liquid ment metal method millimetre molecules oxyhydrogen flame paper peat photograph pin-hole Pipe Plate pressure Proc pupil QUANTITATIVE SPECTRUM quantity radium rays RAYS-continued Received for Publication relative humidity residuary lines retina Roan Royal Dublin Society SCIENT screen seen shadow short-horn spectra strong solution substance surface teetotum temperature thallium tube tufts vapour vapour-pressure vapour-tension vessels water-surface Wave wave-lengths yellow spot yttrium