EUGEN HUSSAK 
MIGUEL A. LISBOA? 
Professor Eugen Hussak died in a little hotel in the city of 
Caldas in southern Minas Geraes, Brazil, on the fifth of September 
last. The important part he took in the development of mineralogy 
and petrography in Brazil, his standing among specialists, and his 
scientific attainments call for a fuller account of his life and labors 
than we are able to give at the present. 
Francis Eugen Hussak was born at Wilden, Steiermark, Austria, 
March to, 1856. His parents were Johann Hussak, a lawyer, and 
his wife Therese von Wagner. After 
he came to Brazil he married Herminia 
Hennies by whom he had two sons. 
He was educated in the Gymnasium 
and University of Gratz, studied after- 
ward at the University of Leipzig, 
where he was a pupil of Ferdinand 
Zirkel, one of the founders of the 
modern science of petrography, and 
later returned to Gratz where he took 
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rocks, and it was from him that he 
received his greatest inspiration and encouragement. After 
graduation he went to Vienna where he attended the lectures of 
Tschermak, and was for three years engaged on the K.K. Geolog. 
Reichsanstalt. In Vienna he prepared his book Anleitung zur 
Bestimmung der gesteinsbildenden Mineralien which was published 
at Leipzig in 188s, a book that was translated into English by 
Professor E. G. Smith, and was published in the United States in 
' Translated from the Portuguese by J.C. Branner. The original article appeared 
in the Jornal do Commercio, Rio de Janeiro, October 7, 1911. 
148 
