HISTOGENESIS OF CONNECTIVE TISSl I . 



are presumed to arise in the peripheral portion of the cell, as 

 proposed by Lwoff (1889), or in a modified peripheral portion of 

 the cellular or syncytial protoplasm, ectoplasm or exoplasm. 

 as proposed by Hansen (1899) and afterward- by Mall [902 . 

 and those in which the fibers are presumed to have a direct 

 intracellular origin as observed by Spuler (1896) and later by 

 Livini (1^09). 



Ill' "circurncellular" origin of fibers proposed by Lwoff, 

 since it mu-t take into account the -eparation of fiber- from the 

 cell- as udl as their origin from int racellular granules, doc- not 

 fundamentally differ from tin- later . riopl.t-mic modilicat i n- 



c 



I-i... .-. \ ..f tin- l. 'iiiii.tii'n i -I a -pim!!.- i-niim-riivi- t: !. a. for 



a 1" riodof 10 iiiiiiut. !:r.iiiKiti-iih. il -rin.v; ..n the- fin-rays <>n ciih.-r 



'i-iiii; taken a- the- n-lativ.-ly lixcd p ,int-;. The cell \va- t'<uml to have covered 



ut ^".u. : i/j in every I-' -x.ni,!-. u ,/, oiiii.-i-tiv.- i. 



C'-H- .1 i tun : cell, tin- Otl I; Ch', Ch", tw ilir..matophores; 



Old, fll.l.itlu-lilllli ill til.x.. 



of Ilaii-ni and Mall. Thc-c- Liter author-, ba-inv their inves- 

 tigation on "fixed" material, pre-uppo-e a constant but gradual 

 recession of the endoplusinic area with coincident changes in 



