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WEEKLY EVENING MEETING, 



Friday, February 10, 1860. 



SiE Henby Holland, Bart. M.D. F.R.S. Vice-President, 

 in the Chair. 



Professor T. H. Huxley, F.R.S. 

 On Species and Races ^ and their Origin. 



The speaker opened his discourse by stating that its object was to 

 place the fundamental propositions of Mr. Darwin's work " On the 

 Origin of Species by Natural Selection," in a clear light, and to con- 

 sider whether, as the question at present stands, the evidence adduced 

 in their favour is, or is not, conclusive. 



After some preliminary remarks, in the course of which the 

 speaker expressed his obligations for the liberality with which Mr* 

 Darwin had allowed him to have access to a large portion of the MSS. 

 of his forthcoming work, the phenomena of species in general were 

 considered — the Horse being taken as a familiar example. The 

 distinctions between this and other closely allied species, such as the 

 Asses and Zebras, were considered, and they were shown to be of two 

 kinds, structural or morphological, and functional or physiological. 

 Under the former head were ranged the callosities on the inner side of 

 the fore and hind limbs of the Horse— its bushy tail, its peculiar 



