▁M . A . ▁in ▁ 1 9 0 5 . ▁ ▁Career ▁In ▁ 1 9 0 2 ▁he ▁started ▁as ▁an ▁assistant ▁in ▁the ▁Ge ology ▁Department ▁of ▁the ▁British ▁Museum ▁( N . H .) ▁in ▁charge ▁of ▁Pro to zo a , ▁Co el enter ates , ▁Sp ong es ▁and ▁Poly zo a ▁(= B ry oz oa ). ▁During ▁World ▁War ▁I ▁he ▁was ▁made ▁cur ator ▁of ▁mos qu itos ▁and ▁produced ▁in ▁ 1 9 2 0 ▁" A ▁Hand book ▁on ▁British ▁mos qu itos ". ▁After ▁the ▁war ▁he ▁returned ▁to ▁the ▁Ge ology ▁Department ▁and ▁in ▁ 1 9 2 8 ▁became ▁K ee per ▁of ▁Ge ology ▁in ▁succession ▁to ▁F . ▁A . ▁B ather . ▁ ▁Lang ▁was ▁elected ▁as ▁a ▁Fellow ▁of ▁the ▁Royal ▁Society ▁in ▁May ▁ 1 9 2 9 . ▁His ▁candid acy ▁c itation ▁read : ▁" Dist ingu ished ▁for ▁his ▁knowledge ▁of ▁p ala e ont ology ; ▁has ▁applied ▁evolution ary ▁principles ▁to ▁the ▁system atic ▁arrangement ▁of ▁foss il ▁poly zo a ▁and ▁cor als , ▁studying ▁the ▁rec ap it ulation ▁of ▁ancest ral ▁characters ▁in ▁the ▁post - emb ry onic ▁growth - st ages ▁of ▁comp ound ▁as ▁well ▁as ▁simple ▁organ isms , ▁e . g ., ▁' B rit ▁Mus ▁Catalogue ▁F oss il ▁Bry oz oa ' ▁( 1 9 2 1 , ▁ 1 9 2 2 ), ▁' The ▁Pel mat op