BOTANIC GARDENS. 



315 



losophy in 1805. At this time the garden was removed to its pres- 

 ent location, on the banks of the Ammer, in the northwestern part 

 of the city, and shortly cold and warm houses for plants and a 

 residence for the university gardener were erected. Kielmeyer 

 was succeeded by Schubler in 1817, and he in turn by Hugo von 

 Mohl in 1835. 



It would be difficult to overestimate the value of the work 

 accomplished by von Mohl during the thirty-seven years (1835 to 

 1872) in which he was professor of botany at Tiibingen. This 

 period does not include the entire time of his activity in this 

 place, however. In 1836 the faculty of medicine offered a prize 

 for an essay on the nature of tendrils and climbing plants, and a 

 thesis by von Mohl, who was then a student, won the prize. This 

 academic essay, written at the age of twenty-two, remained the 

 clearest presentation of the subject until it was taken up by the 

 elder Darwin in 1865. During the half century in which he was 



Hebmann Vochting (sitting, facing front) and. <..r-Lii' 'if Worliera in Botanic Institute in 

 Summer of 1896 ; Professor of Botany and Director of the Botanic Garden since 1887. 

 After a photograph. 



a leading figure in the botanical world, he used a purely inductive 

 method of research, and by a long series of many-times repeated 

 observations established manifold phenomena and facts which he 

 welded into a coherent mass by a logic so relentless that he was 

 incapable of being led astray into fanciful theories and dazzling 

 speculations. Such a method enabled him to take a prominent 

 part in the destruction of the chimerical teaching of the nature 



