3 6 . ▁In ▁ 1 9 2 9 , ▁a ▁year ▁before ▁gradu ating , ▁he ▁was ▁appointed ▁a ▁Junior ▁Scient ific ▁A id ▁to ▁the ▁U . S . ▁Department ▁of ▁Agricult ure , ▁and ▁worked ▁as ▁a ▁chem ist ▁in ▁the ▁fert il izer ▁section ▁of ▁the ▁Bureau ▁of ▁Chem istry ▁and ▁So ils . ▁In ▁ 1 9 3 0 , ▁Line we aver ▁was ▁transferred ▁to ▁the ▁Food ▁Research ▁Division ▁of ▁the ▁US DA ▁as ▁an ▁Associ ate ▁Chem ist ▁purs uing ▁en zym e ▁research . ▁In ▁ 1 9 3 9 , ▁he ▁was ▁transferred ▁to ▁the ▁newly ▁built ▁Western ▁Regional ▁Research ▁Labor atory ▁of ▁the ▁US DA ▁in ▁Alb any , ▁California ▁as ▁Senior ▁Bio chem ist ▁and ▁head ▁of ▁the ▁en zym e ▁section ▁in ▁the ▁bio chem ical ▁division . ▁During ▁and ▁after ▁World ▁War ▁II , ▁Dr . ▁Line we aver ▁collabor ated ▁with ▁the ▁Qu arter master s ▁Corps ▁of ▁the ▁Ar med ▁Services ▁in ▁en zym e ▁work ▁related ▁to ▁p oul try ▁and ▁pow der ed ▁egg ▁flav or ▁and ▁processing . ▁In ▁ 1 9 4 8 , ▁he ▁was ▁appointed ▁Chief ▁of ▁the ▁W R RL ▁P oul try ▁Labor atory ▁in ▁ 1 9 4 9 , ▁a ▁position ▁he ▁held ▁until ▁his ▁ret irement ▁in ▁ 1 9 7 3 , ▁after ▁ 4 4 ▁years ▁of ▁continuous ▁service ▁for ▁the ▁U . S . ▁Department ▁of ▁Agricult ure . ▁ ▁During ▁his ▁career ,