292 CELL INTELLIGENCE THE CAUSE OF EVOLUTION 



specialized structure as the lens in spite of the fact that 

 under normal conditions this is only produced from epl- 

 blastic cells. 



"Some butterflies vary greatly in their appearance at 

 different times of the year, so that they are protected by 

 their similarity to their surroundings in both the wet and 

 dry seasons, when conditions vary enormously. The dif- 

 ference is so great in some cases, that the wet and dry 

 season phases have been classed as different species. 

 'Naturalists were fairly astounded when in 1898 Mr. Guy 

 K. Marshall first bred the black and blue dry season 

 Preus sesamus from the black and red Precis natalensis. 

 The two butterflies differ in size, form, pattern, colors, 

 relation of upper to under surface and habits." 



This again certainly illustrates the same fact that the 

 cells will produce such structures and habitations as will 

 be necessary to protect their lives or that may be required 

 in any particular place or under particular circumstances. 

 Like does not produce like, as is the case in chemical and 

 natural forces, but such things will be produced as will 

 be required and are reasonably necessary. Such color will 

 be provided as will most likely deceive his enemies and 

 save his life and the same will be done by a general in the 

 English army. The mesoblast cells understood how to 

 make a lens for the eye, and when it became necessary it 

 was produced. 



The following by Mr. Walker in reference to the ac- 

 tions of some insects is also interesting: "There is a 

 phenomenon in nature so striking and so general that no 

 theory of evolution can be accepted as plausible, or even 

 possible, which fails to explain it. This is the extraor- 

 dinary adaptation of living organisms to their surround- 

 ings. Not only are they adapted to their physical con- 

 dition but above all to each other. The mutation hypo- 



