2 ▁names ▁of ▁em inent ▁French ▁scient ists , ▁engine ers ▁and ▁mathemat icians ▁ins cribed ▁on ▁the ▁E iff el ▁Tower ▁as ▁well ▁as ▁on ▁buildings ▁around ▁Kill ian ▁Court ▁at ▁M IT ▁in ▁Cambridge , ▁MA . ▁ ▁Cont ribution s ▁to ▁chem istry ▁ ▁O xygen ▁theory ▁of ▁comb ust ion ▁ ▁During ▁late ▁ 1 7 7 2 ▁Lav ois ier ▁turned ▁his ▁attention ▁to ▁the ▁phenomen on ▁of ▁comb ust ion , ▁the ▁topic ▁on ▁which ▁he ▁was ▁to ▁make ▁his ▁most ▁significant ▁contribution ▁to ▁science . ▁He ▁reported ▁the ▁results ▁of ▁his ▁first ▁experiments ▁on ▁comb ust ion ▁in ▁a ▁note ▁to ▁the ▁Academy ▁on ▁ 2 0 ▁October , ▁in ▁which ▁he ▁reported ▁that ▁when ▁ph osph orus ▁burn ed , ▁it ▁combined ▁with ▁a ▁large ▁quantity ▁of ▁air ▁to ▁produce ▁acid ▁spirit ▁of ▁ph osph orus , ▁and ▁that ▁the ▁ph osph orus ▁increased ▁in ▁weight ▁on ▁burning . ▁In ▁a ▁second ▁se aled ▁note ▁depos ited ▁with ▁the ▁Academy ▁a ▁few ▁weeks ▁later ▁( 1 ▁November ) ▁Lav ois ier ▁extended ▁his ▁observations ▁and ▁conclus ions ▁to ▁the ▁burning ▁of ▁sul fur ▁and ▁went ▁on ▁to ▁add ▁that ▁" what ▁is ▁observed ▁in ▁the ▁comb ust ion ▁of ▁sul fur ▁and ▁ph osph orus ▁may ▁well ▁take ▁place ▁in ▁the ▁case ▁of ▁all ▁subst ances ▁that ▁gain ▁in ▁weight ▁by ▁comb ust ion ▁and ▁calc ination : ▁and ▁I ▁am ▁persu aded ▁that ▁the ▁increase ▁in ▁weight ▁of ▁met all ic ▁cal ces ▁is