DARWINISM g I 



arranged to have a joint paper by Darwin and Wallace 

 presented to the Society. This paper, entitled "On 

 the tendency of species to form varieties; and on the per- 

 petuation of varieties and species by natural means of 

 selection," was presented at a special meeting of the Society 



FIG. 48. Charles Darwin. The publication of his "Origin of Species,' 

 in 1859, revolutionized human thought, and gave direction to all scientific 

 and philosophic thinking from that time to the present. 



on July i, 1858, being read by the secretary in the absence 

 of both Darwin and (of course) Wallace. 



76. Early Antagonism to Evolution. The concep- 

 tion that evolution (as distinguished from periodic, super- 

 natural interventions of the Deity) is the method of 



