X?3 



INVESTIGATIONS 



ON 



MICKOSCOPIC FOAMS 



AND ON 



PEOTOPLASM 



EXPERIMENTS & OBSERVATIONS DIRECTED TOWARDS A SOLUTION 



OF THE QUESTION OF THE PHYSICAL CONDITIONS 



OF THE PHENOMENA OF LIFE 



BY 



0: BUTSCHLI 



PROFESSOR OF ZOOLOGY IN THE UNIVERSITY OF HEIDELBERG 



AUTHORISED TRANSLATION 



BY E. A. MINCHIN, B.A. (OxoN.) 



FELLOW OF MERTON COLLEGE, OXFORD 



LONDON 

 ADAM AND CHARLES BLACK 



1894 



