150 MIGUEL A. LISBOA 
In the palace of Dom Pedro II, the emperor of Brazil, he found 
a temporary solution of the problem. Someone told the emperor 
that a mineralogist whom Rosenbusch spoke of very highly was in 
the country without occupation. This led to his being engaged 
to give instruction in mineralogy and petrography to Dom Pedro 
de Saxe, the emperor’s grandson. But the lessons were soon 
interrupted. The pupil wanted to get on too fast. Dom Pedro 
de Saxe wanted to begin his studies by the publication of original 
papers. His Austrian instructor coolly told him that it was too 
early yet; that one should learn before he began to teach. The 
young prince was offended; the teacher insisted, and the matter 
ended with his being shown the door. 
Hussak was living at that time at the old Beresford Hotel in 
Petropolis in front of the imperial residence. He went to his rooms 
and began preparations for leaving the city that same day. He 
was a simple man, and in the crises of life he was at times a mere 
child. He frankly told the keeper of the hotel of his humiliation, 
and of his financial difficulties. The hotel-keeper was more philo- 
sophical about the matter; he consoled the professor, but did not 
allow him to leave. 
The next morning Dr. Stoltz knocked at Hussak’s door, bringing 
an invitation from the magnanimous emperor for him to appear 
at the palace. Hussak went at once, and if any apologies were 
lacking from the young prince they were more than made up by 
his Imperial Majesty himself. So the lessons were continued for 
a while at least. 
Later O. A. Derby engaged Hussak on the geological survey of 
the state of S. Paulo, and for twenty years he was the leading 
petrographer of Brazil. 
A glance at the bibliography of Eugen Hussak shows a remark- 
able originality in his work. To be sure, the backward condition 
of petrographic geology in Brazil contributed largely to this origi- 
nality. Mineralogy and petrography were sciences but little 
cultivated among us. Such work had been begun here by Gorceix 
in the School of Mines at Ouro Preto, but when the Austrian pro- 
fessor came to S. Paulo there was really no one in the country who 
was acquainted with the details of the technique of modern petro- 
