Later Additions up to the year 1892. 47 



discounted by certain oversights with regard to 

 matters of fact, and not a few inconsistencies touching 

 matters of theory. In displaying both these defects, 

 I am not without hope that the result may be that 

 of inducing Professor Weismann so to modify his 

 system of theories as to strengthen the whole by ^ 

 removing its weaker parts. 



