▁Lav ois ier ▁received ▁a ▁prov is ional ▁appointment ▁to ▁the ▁Academy ▁of ▁Sciences . ▁In ▁ 1 7 6 9 , ▁he ▁worked ▁on ▁the ▁first ▁ge ological ▁map ▁of ▁France . ▁ ▁Lav ois ier ▁as ▁a ▁social ▁reform er ▁ ▁Research ▁benef itting ▁the ▁public ▁good ▁While ▁Lav ois ier ▁is ▁commonly ▁known ▁for ▁his ▁contributions ▁to ▁the ▁sciences , ▁he ▁also ▁dedicated ▁a ▁significant ▁portion ▁of ▁his ▁fortune ▁and ▁work ▁toward ▁benef itting ▁the ▁public . ▁Lav ois ier ▁was ▁a ▁human itar ian — he ▁c ared ▁deeply ▁about ▁the ▁people ▁in ▁his ▁country ▁and ▁often ▁concerned ▁himself ▁with ▁impro ving ▁the ▁liv elihood ▁of ▁the ▁population ▁by ▁agricult ure , ▁industry , ▁and ▁the ▁sciences . ▁The ▁first ▁instance ▁of ▁this ▁occurred ▁in ▁ 1 7 6 5 , ▁when ▁he ▁submitted ▁an ▁ess ay ▁on ▁impro ving ▁urban ▁street ▁light ing ▁to ▁the ▁French ▁Academy ▁of ▁Sciences . ▁ ▁Three ▁years ▁later ▁in ▁ 1 7 6 8 , ▁he ▁focused ▁on ▁a ▁new ▁project ▁to ▁design ▁an ▁aqu ed uct . ▁The ▁goal ▁was ▁to ▁bring ▁water ▁from ▁the ▁river ▁Y v ette ▁into ▁Paris ▁so ▁that ▁the ▁citizens ▁could ▁have ▁clean ▁drink ing ▁water . ▁But , ▁since ▁the ▁construction ▁never ▁comm enced , ▁he ▁instead ▁turned ▁his ▁focus ▁to ▁pur ifying ▁the ▁water ▁from ▁the ▁Seine . ▁This ▁was ▁the ▁project ▁that ▁interested ▁Lav ois ier ▁in ▁the ▁chem istry ▁of ▁water ▁and ▁public ▁san itation ▁duties . ▁ ▁Additionally , ▁he ▁was