82 Tnc American Geologist. February, i8i*7 
was afterwards repeated elsewhere, and, in an elaborate form, 
wjis finally published in the Pdimhir Science Monfldij for 
January, 1875. 
The interest manifested in his explorations hy the emperor 
of Brazil, and other otiicials high in authoritj'-, led Hartt to 
hf)pe for governmental aid. and the sueeess of the Geological 
and Geographical Survey of the Territories, under Dr. Hay- 
den, and the Geographical Surveys west of the 100th Merid- 
ian, under Lieut. AVheeler, in this country, stimulated a desire 
on his part to direct a similar enterprise in the great South 
American empire. Accordingly, in the autumn of 1874, he 
went to Rio Janeiro with the intention of establishing, if pos- 
sible, a geological survey of that countr}^ It has been said 
that he was invited by the Brazilian minister of agriculture 
to submit plans,* but Dr. J. ('. Branner, who accompanied 
him, is of the opinion that the trip was undertaken entirely 
upon his own responsibility. f Be that as it may, he did suc- 
ceed in establishing an Imperial Survey, and though his plans 
were greatly curtailed, work began in May or June of the fol- 
lowing year (1875). 
"In the prime of his early manhood, vigorous in health, 
active, persevering, enthusiastic, with a reputation in science 
already well recognized, and with a familiar acquaintance 
with the country and people that he was now called to serve, 
Hartt entered on his great career amid the pride artd confi- 
dence of all who knew him aright. Nor did he fail to sustain 
his reputation. In the face of many difficulties and perplex- 
ities — the jealousies, the ignorance, and the wretched mock- 
economy, that wear the brain and waste the time of almost 
every head of great scientific enterprises — he pursued his 
plans. With his faithful assistants, mainly young men who 
had been brought forward under his own instruction at Cor- 
nell, he explored, collected and wrote, until at last the hand 
of deatli stayed his ceaseless activity.'" ;J; 
In addition to his many duties he accepted, in 1876, the di- 
rectorship of the department of geology in the National Mu- 
*Rathbun, Popular Science Monthly, vol xiii, p. 233. 
IThe Cornell Magazine, vol. ii, p. 187, note. 
JProfessor Daniel S. Martin, in the Proceedings of the Fifteenth An- 
niversary of the University Convocation of the State of New York, Ne- 
crology, pp. 1-27. Albany, 1879. 
