1 88 BIOLOGICAL LECTURES. 



That such will be the case is evinced in the most encouraging 

 manner by the list of collaborators of these Archives — a list in 

 which all the great departments of biology are represented. 

 Besides these many other prominent investigators have ex- 

 pressed their interest and sympathy in the new tendency and 

 in its organ. In this place I would again express my gratitude 

 to all of these gentlemen. 



Innsbruck, August, 1894. 



