670 The American Naturalist. [August, ; 
5. The facts of Heredity support the theory of a continuous 
and specific form of protoplasm as the basis of repetition of 
type. 
Evolution—6. The facts of evolution, both in present and 
past time, point to transformism by definite progression toward 
new types of structure in succeeding generations, opposing the 
retrogressive forces of heredity. 
7. The theory (Natural Selection) of definite progression fe 
the accumulation of fortuitous favorable variations is found 
to be not only theoretically improbable, but not to correspond 
with the observed laws of variation. 
8. The laws of variation (anomalies) lend support to the ` 
theory of hereditary transmission of individual acquired 
variations, but even this (Lamarckian) theory encounters many 
difficulties. 
I think this is as fair a statement as can be made at the 
present time, and it rests upon a general survey of the whole 
field. 
