— 20 — 



STOTi. 9nMAepMHqecKiMa«ejio6oKT>, cocToamift hstj MCJiKHKt h o;tHO- 

 poAHfcjx'Ł BJieMenTOB-B; na cjiibAyromeMi.: i^nHitepMi, h KOHn,ti >Ke- 

 jio^Ka, a BTb cpeAHti'fe puKJibifl kji^tkh 9M6pioHajibHaro Mosra; aa 

 CJi-feAyioiUHK-Ł pa3p'fe3axt: KpyroMt ane^tepM!,, koiii],ej w^ejiooa, 

 a BI. cpeAHH'fe uacTb HepBHoii TpyoKH cb pbixjio Jiea^amaMw KJi-feT- 



KaMH B-L MtciaK-b, ÓJIHajaHllIHK-Ł Kt 9IIHJiepMHqeCK0My HiCJioSy, 



B'£, ocooeHHOCTH iKQ ct 3aji,earo KOHua (Ta5ji. YII, ^i^/. 2). Tanoe 

 puxjioe pacnojioH^eHie KJi-feTOKi. HaGjiioiiaeTca na npoTajKeHipr, iipn- 

 GjiH3HTejiBH0 iipeji.CTaBJieHHOMt iipH /. n. a^Jig. 24, Ta6jj. YII. 



CorjiacHO CŁ Ha6jiK);i,eHiaMH KameHKO, PaÓJifl m ^opna 

 yKasaHHHMt pa3pHXJieHieM'b, Rbi3UBaK)ii];nMt iiepoBHOCfb Bepx- 

 Hefi CTi^HKH M03roBOH TpyÓKH, M Ha^HHaeTca oGpasoBanie rae- 

 rjiio3HOH nojiocKM, HJiH, KaKŁ MM npHHMMacMi), oómaro 3aiiaTKa 

 nepa4>epHiiecK0H nepEHon cucTeMH. 



MtcTOMTb HaqajibHaro ero pa3BMTifl aBJiaeTca TaKHMi. oopa- 

 30Mi> TeMflHHoii BsraOi., t. e. y^acTOKT. 9M5pioHajibHOH HepBHoii 

 CHCTCMbi, 031* KOToparo Biiocji^bACTBia |)a30BbeTca cpejtaiii Mosn.. 



Hto ate KacaeTCfl rHCTOJroraiiecKofi npHpoji,bi onHCbiBaeMaro 

 pa3pbixjieHia, to idCToqEłiiKOM'b cbommtj ona HM'feeTi> paciiojiO/KCHie 



BJieMCHTOBl., BXO;i,flIIl,HX'b BI. COCTaB-^b CIIMHHOH CtIjHKH M03rOBOH 



TpyOKH. MiiTOTMqecKifl *Hrypbi bł oOwjiiH bh^hh, bo nepBbix'b, 

 B-b 6jiMHiaBiimxi. KJi'feTKaxi>, orpaHHqMBaiom,HX'b riojiocTb M03ra, 

 a BO BTopŁJX'b, H iio nepH<i>epiM pHXJiaro 3aqaTKa. OiieBMĄHO, qT0 

 Tor^a KaKi> nepBbia aBJiaiOTca BupasHTCJiflMH no;i;roTOBHTejibHaro 

 npoi;ecca, — BTopbia snaMCHyiOT-b ^tajibH^feiiiuee yme pa3BHTie sa- 

 qaTKa uepHa>epHqecKOH HepBHon cMCTeMbi. Bjiarojtapa TOMy, qT0 

 3A'feeb KJi-feTKM JieajaTT) ne TaKT> cKyqeH(), KaKi. bb iiepBHOH Tpy6- 

 K% acH'fee BH;i.Hbi MXb c*epHqecKia ajtpa h npoTonjia3MaTMqecKia 

 TliJia; GjiHataiiuiia H3'b hhx'ł wb iiepa^epin oO-na^aiOTb B-feTBHCTbi- 



MH OTpOCTKaMH. 



Bi, ;i,ajibH'feMiueM'b pasBUTin oómaro 3aqaTKa nepH*epHqecKOH 

 HepBuoS cucTCMbi HM'feK)T'b M^CTO iipeacjie Bcero rpH MOMenia: 

 pa3pocTauie ero Biiepe^i., uo GoKaMi, HepBHoii ipyoKH h Hasa^-b. 



^To Kacaerca iiepBaro 031. HMX'b, to yate M a p iii a jiji i. 

 H Bau-b-Beiie yKa3ajiM. qTO riepejiniH K0Heij,ij raHrjiio3HOw no- 

 jiocKŁi ii,biujieHKa M cejiaxiM upocTupaeTca ;^o ypoBHa iiepe;j,HeM 



