Guessing at Half and Multiplying by Two 337 



stands than to quote his statement, and describe it 

 as something which he has reluctantly " conceded." 

 In dealing with the principal writers on evolution, 

 Mr. Cook is continually found resorting to this 

 cheap device. For example, when Professor Tyn- 

 dall declares that " if a right-hand spiral move- 

 ment of the particles of the brain could be shown 

 to occur in love, and a left-hand spiral movement 

 in hate, we should be as far off as ever from un- 

 derstanding the connection of this physical motion 

 with the spiritual manifestations," when Pro- 

 fessor Tyndall declares this, he simply asserts 

 what is a cardinal proposition with the group of 

 English philosophers to which he belongs. "With 

 Professor Huxley, as well as with Mr. Spencer, it 

 is a fundamental proposition that psychical phe- 

 nomena cannot possibly be interpreted in terms of 

 matter and motion, and this proposition they have 

 at various times set forth and defended. In the 

 chapter on Matter and Spirit, in my work on 

 " Cosmic Philosophy," I have fully expounded 

 this point, and have further illustrated it in 

 "The Unseen World." With the conclusions 

 there set forth the remark of Professor Tyndall 

 thoroughly agrees, and it does so because all these 

 expressions of opinion and all these arguments are 

 part and parcel of a coherent system of anti-mate- 



