APPENDIX TO CHAPTER V. 
On OBJECTIONS WHICH HAVE BEEN BROUGHT AGAINST THE 
Tueory oF Orcanic EvoLurion ON GROUNDS OF 
Pal £onTOLOGY. 
Wuite stating in the text, and in a necessarily general way, 
the evidence which is yielded by paleontology to the theory 
of organic evolution, I have been desirous of not overstating 
it. Therefore, in the earlier paragraphs of the chapter, 
which deal with the most general heads of such evidence, I 
introduced certain qualifying phrases; and I will now give 
the reasons which led me to do so. 
Of all the five biological sciences which have been called 
into evidence—viz. those of Classification, Morphology, 
Embryology, Palzontolozy, and Geographical Distribution— 
it is in the case of palzontology alone that any important 
or professional opinions still continue to be unsatisfied. 
Therefore, in order that justice may be done to this line of 
dissent, I have thought it better to deal with the matter in 
a separate Appendix, rather than to hurry it over in the 
text. And, as all the difficulties or objections which have 
been advanced against the theory of evolution on grounds of 
paleontology must vary, as to their strength, with the estimate 
which is taken touching the degree of imperfection of the 
geological record, I will begin by adding a few paragraphs to 
what has already been said in the text upon this subject. 
First, then, as to the difficulties in the way of fossils being 
