Anotherresultofthisabruptdeparturewasaveryrapidrise,whichtooktheballoonaheightof3,000feetinthreeminutes’
space,andanother4,000feethigherinsixminutesmore。
Seventhousandfeetverticallyinnineminutesisfastpace;
butthevoyagersweretoknowhigherspeedyetthatdaywhentheverticalmotionwastobeinthereverseandwrongdirection。Attheheightnowreachedtheywereincloud,andwhilethusenvelopedthetemperature,asoftenhappens,remainedpracticallystationaryatabout32degrees,whilethatofthedewpointincreasedseveraldegrees。But,onpassingoutofthecloud,thetwotemperatureswereverysuddenlyseparated,thelatterdecreasingrapidlyunderadeepblueupperskythatwasnowwithoutacloud。Shortlyafterthisthetemperaturedroppedsuddenlysome8degrees,andthen,duringthenext12,000feet,creptslowlydownbysmallstages。
Presentlytheballoon,reachingmorethantwentythousandfeet,or,roughly,fourmiles,andstillascending,thethermometerwastakenwithsmallfitsofrisingandfallingalternatelytillanaltitudeof24,000feetwasrecorded,atwhichpointotherandmoreseriousmattersintrudedthemselves。