Show an aels well may du win speak of the braia of an as one of the most wondrous of in alio world wo ire apt if think that it is impossible for so m a piece ot matter to possess the necessary complexity required for alic discharge of elaborate functions alo microscope will no doubt show some details in alic ants brain but these all hopelessly short of revealing the refinement which the ants brain must really have the microscope is not adequate to show us alc tlc texture of it lias been one of the great discoveries of modern times to enable us to form boino numerical estimate of lie delicacy of alio fabric which wo know as inert water or air or iron may be divided and subdivided but the process can not bo carried on there is a dennid limit we anro even able to make somo approximation to the number of molecules in si given iniss of matter sir W thompson las estimated that tho number of atoms in a cubic inch of nir s to be expressed by alio llio figure three ollow cd by no fewer than twenty ciphers alio brain of tho ant doubt ess contains more atoms alinn an equal of air but even if wo suppose them to be the same and if we lake ho size of an nuts bri n to bo a globe one thousandth of an aneli in diameter we aro able to form some cs limato of lie of atoms it must contain the number is to bo expressed by writ ng down six and following it by eleven wo can imagine atoms grouped in so many various ways that even the complicity of the kills brain may be intelligible when wo have so many units to deal with an illustration will perhaps make the argument clearer T kc a and ai naif of little black marks put them in a certain order and we have a wondrous result carwins Dar wins descent of man this book merely consists of about placed one after the other in a certain order whatever bo the complexity of alio llio ants brain it is still hard to believe that it could not be fully described in volume each as largo aa carwins Dar wins work yet the number of molecules in the ants brain is at berst times as cicat as the number of letters in the memorable u iu estion longmans magazine |