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Show BOILING WATER THAT WILL NOT BOIL AN EGG. Most of the boss and gills have heird, no doubt, that although watir mis he mule to boll nt the top of a hUh mniin-nin, mniin-nin, It cannot be nade hot enough to boll an egg, IVihips they have puzled over this u goo I deal wondering whs the egg will not boll If the water does. Ihes know vers well that if an egg be dinpied Into boiling wnter In the kin ll en nt th. lr hnuse mid nllnned to leuialn live minutes, It will b boiled neirls as haul ns u stnne. Whs then, will ll not .In the name .in u mountalntopf The leiB.iu Is tint It requires less heat to boll untei on a inountnlntop thin It does down nt the sea level, und the water, theiefnie, does not get hot enough to ook the egg, Wnt.r bolls on a mountain sus, thiee miles In height ut a tempei nine nf nbout !' d.grees but It will not boll nt sin livel at less than 21 degiccs Now, ns It lequlies a hent of Hi ilegices to mok un erg. It Is veis plain why the water Hint bnllH ut IS-, dgiees will nnt do the woik Hut why will water boll nt a tempera-tuie tempera-tuie of W degieea on a iiinuiitalntop? hen sou putn keule of water over tt fire the w itei In the bottom of the kettle ket-tle soon begins lo i,et hot, nnd as It gets hot It ilses to the top of the kettle, rol.lei witer . timing down tn take Us plaee nl the bottom This goes on until un-til nil the w itei In the kettle hetomes hot, mid flu n as It els hotter nnd hnt ter little pinnules or bubbles, nf steam Hum ttl the bottom and nbitnd tn the lop where they escipe Intn the air This ilso and escape of tpo bubbles nt'steiim Is eallcd boiling, and It his been found tint unilei nidlnurs mndl-tlnus mndl-tlnus It will nut take plait, until the vvulei tonnes a tcmieratiue nf 51! dogma do-gma vililth is heat enough m took an f(,K en any kind of food Now, ou must leniember that tho piessuie of the ulr nil everything ii round Snu Is rlfte. u pnunds to the tqiMie Inih, nnd that pressure, thoiefote, id on the sin f ice nf the water In the kettle and has to he ovflcome by tne bubbles of steam berore they tan escapi from the wnler They have foreo enough to es-cape es-cape vvlin driven upw in! by a heat of ;i.' drgiees but not until then. On 1 nioiintalntop, however, the eon-dltlons eon-dltlons are vers din. rent. Iheioihoalr Is much MUitcr than It Is at s.a level, and the piessuie Is less than llflren I minds tn the squire Inch Heme the slenm bubbles do not meet with so miiih leslstanco In (seating fiom the vvnlcr, nnd n heat nf IS1-, degrees Is Ren-oralis Ren-oralis sulllclent tn drive them nut, in nther vvoids. a licit of lSr degrees will hill w itei on the mnuntnlnlnp, nnd ih wnter cannot be mndo nns hotter when the ste un b, gins to isciie, sou lannot make It hot enough there to cook food |