▁All ▁ 2 3 ▁fl ights ▁were ▁successful . ▁ ▁References ▁ ▁Category : Delta ▁( ro cket ▁family ) <0x0A> </s> ▁Emil ▁Ros enberg ▁( 1 8 4 2 – 1 9 2 5 ) ▁was ▁a ▁bi ologist ▁and ▁professor ▁of ▁compar ative ▁an atom y , ▁emb ry ology ▁and ▁hist ology , ▁who ▁worked ▁ 2 0 ▁years ▁at ▁the ▁Imperial ▁University ▁of ▁Dor pat . ▁ ▁Emil ▁Ros enberg ▁attended ▁college ▁as ▁a ▁student ▁of ▁Carl ▁Gegen ba ur ▁at ▁the ▁University ▁of ▁J ena . ▁From ▁ 1 8 6 8 – 1 8 7 5 , ▁he ▁was ▁the ▁second ▁pro se ctor ▁at ▁the ▁Imperial ▁University ▁of ▁Dor pat , ▁and ▁in ▁ 1 8 7 6 , ▁he ▁was ▁appointed ▁as ▁a ▁professor ▁of ▁compar ative ▁an atom y , ▁emb ry ology ▁and ▁hist ology . ▁Emil ▁Ros enberg , ▁working ▁as ▁professor , ▁from ▁ 1 8 7 6 ▁to ▁ 1 8 8 8 , ▁system at ized ▁the ▁compar ative - an atom y ▁collections ▁of ▁the ▁University ▁of ▁Dor pat ▁in ▁accord ance ▁with ▁the ▁system ▁developed ▁at ▁the ▁John ▁Hunter ▁Museum ▁in ▁London . ▁ ▁Emil ▁Ros enberg ▁also ▁worked ▁as ▁a ▁Professor ▁of ▁An atom y ▁in ▁U tre cht . ▁ ▁Notes ▁▁ ▁Category : 1 8 4 2 ▁birth s ▁Category : 1 9 2 5 ▁death s ▁Category : E ston ian ▁bi olog ists ▁Category : E ston ian ▁an atom ists ▁Category