8 BOTANICAL GAZETTE [ JANUARY 
Sachs laid a special emphasis) even once without valid excuse 
might be perfectly confident that he would find his place occu- 
pied by another. There was always a considerable waiting list 
for entry into the institute. Sachs took only a limited number 
(ten) of workers into his laboratory, and for my own first 
appointment as supernumerary in the famous establishment, | 
have wholly to thank a warm recommendation from Herr K@l- 
liker. 
In the first year of his residence in Wirzburg, 1868, there 
appeared the first edition of the well-known Lehrbuch, upon 
which Sachs had begun definite work almost immediately after 
the appearance of the Handbuch, and which was the fruit of 
years of previous labor in Poppelsdorf and Freiburg. The same 
evidences of superiority which had already characterized the 
Handbook appeared in yet higher degree in the later volume. 
Its presentation and general grasp, as well as the vast amount 
of preliminary research which the work of the author repre- 
sented, gave the new work a rank which heretofore had never 
been attained by any text-book of botany. It was a master- 
piece of presentation in text and illustration alike, and not only 
set forth in clear and critical fashion the facts of plant-life 
which came within its scope, but presented to a considerable 
extent theories, unworked problems, and the prophecy of future 
fields which made it invaluable to botanical research. Even 
more than the presentation and material of the text, the admira- 
ble illustrations gave to the work an excellence not yet sur- 
passed. Today we still meet in nearly all botanical texts these 
excellent old familiar figures of Sachs. Only two years after 
the appearance of the first edition of the Lehrbuch, a second 
became necessary, and two years later a third, and in 1874 the 
fourth appeared. In its translated form this book extended the 
most recent botanical knowledge and the thought of the modern 
scientific world into all the lands of culture, and’ it served the 
interests of physiological investigation and stimulated general 
botanical interest in a way which heretofore had been denied 
any botanical work. According to the testimony of my Ameri- 
