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The validity of this view gets even more likely if wetake into consideration the fact that the same germ can develop indifferent forms, depending on the circumstances. For example, in an earlythe period the embryo has no gender and becomes male or female accordingdefinition of preponderance of the forces. Next, positively certain that fromthe larvae of the working bees will be the Queen bee, if the time to change her foodthe one for the larvae of Queen bees. All of these examples suggest thateach step in zarodyshakh complications occurs from the action of random forces onbefore the already existing complications. Indeed, we have the basis of apriori to believe that development takes place in this way. Nowknown that no germ, animal or vegetable, does not containyourself the slightest beginning of a track or designate of the future body;the microscope showed that the first process that occurs in every fertilizedthe Bud, a process repeated simultaneous fragmentation endsthe formation of a mass of cells, of which none shows anya special nature; therefore, there seems to be a different outcome, asto assume that a private organization that exists for the moment inthe developing embryo translates the influence of external actors in the followingfazis, that - in the future, yet through the ever-increasingcomplications do not develop into a final form. In any case, we do notcan really explain the origin of any plant oranimal. We are still in darkness to those mysteriousthe properties in virtue of which the germ, subordinate to the known influencesundergoes the special changes, opening a number of transformations. All of ourthe aim is to show that this germ havingthese mysterious properties, the development of a body depends at allprobability because of the multiplication action, which, as we have seen, isthe cause of progress in General, as far as we have hitherto traced it.
Manifests itself whether or not the transition from homogeneous to heterogeneousthe biological history of the globe - in any case, it is quite clearvisible in the progress of the later and most diverse creations in person.It is equally true that in the period of settling of the Earth humanthe body became more and more heterogeneous in the educated parts oftheir species and that this species as a whole became more diverse in powermultiplication of races and the differentiation of these races from one another. The proofthe first of these regulations, we can cite the fact that the relativethe development of the members of the civilized man is much more removed from the Generaltype of the placenta mammals than the lower of the human race. Often, whencorrectly developed body and arms, the Papuan has extremely short legs,Recalling thus the chimpanzee and the gorilla, have no big differencesthe size of the rear and front members In European large length andthe massiveness of the legs become extremely noticeable; the back and front membersbecome relatively more diverse. Further more, the preponderance of the cranial bones overthe front explains the same truth. Among vertebrates in General progressexpressed increasing heterogeneity in the vertebral column, and especially inthe vertebrae constituting the skull, so the highest forms are relativelya large amount of bones covering the brain, and the relatively smaller volumethose which form the jaw, etc. This characteristic trait, moresharp in man than in any other creature, shall be issued the Europeansharper than the wild. Moreover, judging from the greater extent and variety ofshow them abilities, we can conclude that a civilized manalso has more complex or more heterogeneous nervous system than notcivilized; and, indeed, the fact that this visible part in increasingthe size of the brain corresponding to the nerve nodes, part of the morethe broad retreat of the convolutions of the brain from symmetry.
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