Journal of the Asiatic Society of Bengal April 1849

Instead of the height of the snow-line on the northern or southern declivity I shall therefore say the height at the northern or southern limit of the belt of perpetual snow where the limits of the belt of perpetual snow arc to be understood as having exactly the same relation to the snowy surface in a horizontal plane that the snow-line has in a vertical. [...] 'Gerard of his visit to the khat61 pass or this range which he unde000k expressly for the purpose of determining the height of the snbw-thEecontains the only definite information as to the limit -of.pereetualsnow at the southern edge of the belt thatis to.be found in the4Wel)f the published wriings of the Gerar dit; and the fallowing is a short abstfant of his obser-"11119.] On the Snow-line [...] From the way in which the term north declivity was introduced into the enunciation of the phcenomenon of the greater elevation of the snow-line at the northern edge of the belt of perpetual snow an idea naturally arose that it was observed only on the declivity immediately facing the plains of Tibet and M. Humboldt in the quotation I before gave from ` Cosmos ' is careful to restrict it to the [...] Among the more evident causes of the irregularities in the melting of the snow may be mentioned the powerful action of the heavy summer rain on the southern face as compared with what falls as little more than a drizzle on the northern ; the protection afforded from the radiation of the sun by the heavy clouds so frequent on the south contrasted with the relative slight. [...] resistance of the less dense but not uncommon clouds on the north ; the differences in the temperature of the air that acts on the lower edge of the snow produced by the difference of height of the snow-line on the opposite faces of the chain ; and lastly the differences of the temperature of the air and of the amount of radiation and reflexion dependent on the differences in the state of the su