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Analyses of Books . 
675 
A very important question will here suggest itself to biologists 
— Are the dodtrines of Spiritualism compatible with the theory of 
Evolution ? Mr. Wallace upholds the affirmative in a passage 
which we must take the liberty of quoting in full. He says : — 
“ Having, as above indicated, been led by a stridt induction from 
fadts, to a belief,- — -istly, in the existence of a number of preter- 
human intelligences of various grades ; and 2ndly, that some of 
these intelligences, although usually invisible and intangible to 
us, can and do a dt on matter and do influence our minds, — I am 
surely following a stridtly logical and scientific course in seeing 
how far this dodtrine will enable us to account for some of those 
residual phenomena which Natural Selection alone will not ex- 
plain. In the 10th chapter of my “ Contributions to the Theory 
of Natural Selection ” I have pointed out what I consider to be 
some of these residual phenomena, and I have suggested that 
they may be due to the adtion of some of the various intelligences 
above referred to. This view was, however, put forward with 
hesitation, and I myself suggested difficulties in the way of its 
acceptance ; but I maintained, and still maintain, that it is one 
which is logically tenable, and is in no way inconsistent with a 
thorough acceptance of the grand dodtrine of Evolution, through 
Natural Selection, though implying (as indeed many of the chief 
supporters of the dodtrine admit) that it is not the all-powerful, 
all-sufficient, and only cause of the development of organic 
forms.” We must venture to suggest to Mr. Wallace the further 
expansion of this interesting idea. 
This reference to the compatibility of Spiritualism with the 
theory of Evolution reminds us of another point. At Spiritualist 
seances the forms manifested to the spectators are (or are sup- 
posed to be) the spirits of human beings exclusively. Now in 
conversation with Spiritualists we have more than once thrown 
out a friendly challenge that they should seek to obtain mani- 
festations of pre-human anthropoids, missing links, and other 
extindt animals. Not being, for the most part, naturalists, they 
have paid no attention to our suggestion, or have perhaps re- 
garded it as a mere joke. But we maintain that such manifesta- 
tions would, equally well with the appearance of deceased men 
and women, prove the existence in living beings of an element 
not destroyed by death. Further, the ordinary spirit manifesta- 
tions are open to the objedtion that the medium or a confederate 
artfully personates the supposed shade. But it would be impos- 
sible for such persons to personate successfully a Pterodadtylus, 
a Hyenodon, or a Pythonomorpha. To naturalists such mani- 
festations would be priceless ; they would supply absolute demon- 
stration of the theory of Evolution, and prove the continuity of 
mankind with the lower animals. Will Spiritualists make the 
attempt ? Having put forth this suggestion it was with much 
pleasure that we read some remarks by Mr. Gerald Massey 
(“ Light,” Odt. 15) to this effedt : — “ It would be of equal inte- 
