oôocoôJTflfOTca MaTepHHCKia kjiI&tkii nwjibi^bi, y^acTOKi» 

 TKaHo, oepBOHaMa.ibBO rspMHa;i.îeîKaBiyiM BepxeeM cTopoH'fe 

 .IMCTOHKa (TbPlîiHKÎl), BCJI'ÈICTBie HGpaBHOM'BpHaro pocTa 

 oô'feiix'L CTopoHT); oyiieii) yma jîeîKaTh Ha rpaHMu-fe Me^'jiy 

 BH'ÈiuBeîo ïi BeyTpeeHeio CTopoHCH).— ïïacTb TbneeKîi hh- 

 îKe obiJibiieKOBTj npejiCTaBJïfleTT) Biuh; oea ocTaeTca ko- 

 poTKOK) uo^Tii no DO-iearo pa3BFîTia liB-feiKa ii ootomt> 6bi- 

 cTpo BbjpocTaeTT) B-b itJîîiey. 



3aBa3b oôpasyeTca mi) iiByxi» JiMCTOHKOBT)---npaBaro w Jit- 

 Baro — , ooHBJisiomHxca bTî to Bpeiiîa, Eorm mojioji,om i^b-è- 



TOK-b mtGJ-h y me itOBO.iîbHO paSBUTOM OKOJïOIJiBlBTeHK'b h Tbl- 



qnHKM BT» BUiit a^JiocïH^ecKHX'b ôyropKOBi) (piîc. 6); dm 2 

 .iHCTO^iKa 5biCTpo pocïyTT) iipyri» jipyry ea-BCTp'feHy h cEopo 

 HMJKHÎa ii\i> 'lacTîî cxoiiaTca Meaîny coook) no cpejiHeM 

 jimm i^BtTKa. Ean^ TO.ibKO om nociiirm TaKofi cieneHH 

 paBBHTia, Ha ueHTpajihHOïî nncm uB'BiKa, ao Ttxiy nopi» 

 coeepuieHHO diockoh cjieïm BbinyooH, noaBJiaeica 



B03BblUieHHblfl BaJlHKI), KOTOpblM CKOpO HpilHllMaeTTî BHin> 



uiHpoKOH neperopoji,KH, pasii'feJiaïcmeH Becb BiB'feTOK'b na 2 

 coBepmeeHO paBHbia ii cuMMeTpHHHbïa nojîOBHHbi — opaByio 

 H jiîiByîo. (poc. 8,7). Meaîiiy t-ëmT) .ihcto'^kh 3aBa3îî cbommïi 

 BepxHHMH qaciaMa 3arHôaï0Tca do Haypa8.ieHiîo ki> i^enipy 

 UB'feTKa II epocTaioTca Meaîjiy co6ofo oo Bceli juimt cbo- 

 Hx^ KpaeBx, laKi) mo Meaîny hhmh ociaeTca tojibko y3- 

 Kaa nponojibHaa m,ejih bi> cpcneeM qacTH uBtTKa. (pHC.9) 

 TaKTï KaKT> Bi 3T0 BpcMfl Ha HOBepxHOCTH Bcero oonaTKa 

 npoMcxonHTT. CHJibHoe paspocTanie hb'ètkobti, to ooKOBbia 

 CTlsHKH 3aBa3e, BCJi'ÈncTBie iiaB-icHia, OKasbiBacMaro ea née 



CO BCtX^ CTOpOlil) COCfeJlHHMH UB'feTKaMlî^ Hpiî BOMatOTT» 0.10C- 



KyR) «>opMy; BepxHia nacTH ji0Cto'ikobt> 3aBa3H, Bxoiamia 



BT) COCTaBT» HapyîEHOM nOBepXHOCTH nOMaTKa, OÔblKHOBeHHO 



TaKîKe mitmi» bhji^ njromajiKiî, h Bca 3aBa3b MoaîeT^ 6biTb 

 Haqnnaa cio btofo BpeMeHH cpaBne^a no CBoew oopM'fe et 

 M 4, 1877. 17 



