The Philosophical magazine; a journal of theoretical, experimental and applied physics . .M. the thermometer marked 52° F. ; we had beentold that the phenomenon of the shadow depended on thetemperature at the sununit falling to 30° or 40° F. ; andwhen, shortly after, the sun rose behind a cloud we hadalmost lost all hope of seeing anything ; but suddenly the sun peeped through a chink in the clouds, and 32 Hon. Ealpb Abercromby on the peculiar we saw the pointed shadow of the Peak lying on the mistyland. Driving condensed vapour was floating about, and afragment of rainbow-tinted m
The Philosophical magazine; a journal of theoretical, experimental and applied physics . .M. the thermometer marked 52° F. ; we had beentold that the phenomenon of the shadow depended on thetemperature at the sununit falling to 30° or 40° F. ; andwhen, shortly after, the sun rose behind a cloud we hadalmost lost all hope of seeing anything ; but suddenly the sun peeped through a chink in the clouds, and 32 Hon. Ealpb Abercromby on the peculiar we saw the pointed shadow of the Peak lying on the mistyland. Driving condensed vapour was floating about, and afragment of rainbow-tinted mist appeared near the top of theshadow. Soon this fragment grew into a complete prismaticcircle of about 8^ diameter by estimation, with the redoutside, formed round the sunnnit of the Peak as a author instantly saw that with this bow there ought tobe spectral figures, so he waved his arms about and immedi-ately found shadowy arms moving in the centre of the rain-bow. Two dark rays shot upwards and outwards on either side Fiof. 2.—Diaprram of rainbow round the of the centre, as shown in the diagram fig. 2, and appearedto be nearly in a prolongation of the lines of the slope of thePeak below. The centre of the bow appeared to be justbelow the point of the shadow, not on it; because we werestanding on a platform below a pointed shrine, and the sub-jective bow centred from our own eyes. If we did not standfairly out in the sun, only a portion of the bow could beseen. Three times, within a quarter of an hour, this appearancewas repeated as mist drove up in proper quantities, and fitfulghmpses of the sun gave sufticient light to throw a shadow Sunrise-Shadows of Adams Peak in Ceylon. 33 and form a bow. In every case the shadow and bow wereseen in front of land and never against the sky. The lasttime, when the sun was pretty high, we saw the characteristicpeculiarity of the shadow. As a thin wreath of condensedvapour came up from the valley at a proper height
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