“Monsieur，”continuedhe，“, hehadinventedthevalve, whichpermitsthegastoescapewhentheballoonistoofull, orwhenonewishestodescend；thecar, whichallowsthemachinetobeeasilymanaged；thenetwork, whichenclosesthefabricoftheballoon, andpreventsitsbeingtooheavilypressed；theballast, whichisusedinascendingandchoosingthespotofdescent；thecoatofcaoutchouc, whichrendersthesilkimpermeable；thebarometer, whichdeterminestheheightattained；and, fnally, thehydrogen, which, fourteentimeslighterthanair, allowsofascensiontothemostdistantatmosphericlayers, andpreventsexposuretoaerialcombustion.Onthe1stofDecember，1783，, ：, .”
Theunknownwasseizedwithaviolentagitation.
“I, Monsieur, havestudied；, whoseassertionsmightbedoubted, atDijon, Guyton-Morveaux, bytheaidofoarsandahelm, impartedtohismachinesperceptiblemotions, , atParis, awatchmaker, , hasmadeattheHippodromeconvincingexperiments；for, withtheaidofaparticularmechanism, , flledwithhydrogen, injuxtaposition, and, bymeansofsailsdisposedhorizontallyandpartiallyfurled, hopedtoobtainadisturbanceoftheequilibrium, which, incliningtheapparatus, ，-thehélice, movinginamovablemedium, , andnotanAcademyhascometomyassistance, notacityhasflledmysubscriptionlists, notagovernmenthasdeignedtolistentome！Itisinfamous！”
Hisgesticulationsweresofuriousthatthecarexperiencedviolentoscillations；, , at1200metresinheight, almostaccustomedtothisnewtemperature.
