. 
: 
; 
} 
] 
; 
1898 | JULIUS VON SACHS 3 
with the making of illustrative wall charts, and with microscop- 
ical work. Purkinje, a keen investigator, with a talent for 
geniality and cordiality, responsive in his contact with young 
people, must have been in his domestic life a strong master, who 
was a little particular and exacting in his methods of training. 
Sachs, who in his young years was certainly accustomed to 
work and privation, has repeatedly made mention of the ‘‘harte 
Arbeit” with which he had to make recompense for the privi- 
lege of his sojourn at the Purkinje establishment. In order to 
satisfy all the demands which were made upon him, it became 
necessary for him to reinforce his often exhausted nerves with 
artificial stimulants, whose use, learned here, finally became fatal 
to the never resting man. 
Having successfully passed the entrance examinations, Sachs 
was admitted as a student at the University of Prague in 1851. 
For a short time he attended the lectures of the botanist, Kos- 
teletzky, and later those of Willkomm. He occupied himself 
somewhat with physics and mathematics, but was especially 
interested in philosophy under the direction of Professor Zim- 
mermann, who won a great influence over the student, and 
deemed him worthy of a friendship almost paternal. The work 
which he carried on at the same time in the Purkinje laboratory 
was limited exclusively to animal physiology. 
In Prague, through the influence of Purkinje, Sachs learned 
Bohemian, and was induced to publish a number of scientific 
contributions in the Bohemian journal Zva, which he signed 
with a Bohemian name.” 
In 1855 his name appeared in the Botanasche Zeitung for the 
first time in any German scientific journal. The very first con- 
tribution of the young investigator, dated 1853, gives evidence 
of his keen insight. It is his account of Collema bulbosum ( pul- 
posa), in which he discussed the change which he had observed 
in nostoc colonies growing in Collema, and urged that this 
“Unwandlung” was caused by the appearance of ‘ gleichsam 
2A German list of the titles of these publications occurs in the catalogue which is 
published with Goebel’s “ Nachruf,” Flora, supplementary volume of 1897, p. 126. 
