I -I I ! ' TS PRODUCED BY CUTTINC, I'ARAM F.CIUM CELLS. 4') 



i. J. '.7 and 68 of Tal>le II. Number i \va- killed after 4* 

 ami lound to h,i\i- only a fexv nuclear fragment:*. Xuml >< 

 xva- killed ,tt the end (if <><> hour-. and. although cm during the 

 pro. . u ii ui, xva- found to have a normal macron ucleii-. 



Nuiiil- was dead at the end of 72 hour-.no regeneration 



:irred luit the cell xva- \ ery lixely and examination -hoxveda 

 normal m.u ronm leu-. Number o.s \\,t- 3 vegetative I'-nn which 

 vd perfectly from the -h'.ckof the oiu-ratioii and li\ed 

 willioui i ilion or divi-ioii for a period of three da\ 5. 



( ': ' - in which the cut fragment divided in the original 



tral plane of the cell, the dividii MH-IU \va- killed in two 



for tin- dri.Tinination of the nuclear condition- d)\ l>th 



dau^lr :-d in .> ca-e- (b)\ an al-iioniial cell \\a- formed 



\\ hi( h di\ iled i hit ( I inn - in nuni-tei - were t'-rmed 



in 7 : and : itimi occurred in ., . 



I lie di\ idii m \\a-killed eil her duriiiL; di\'i-ioii or 



imiiiediaii-l\ .ird- b. determine the condition- of the nuclei 



in expeiimeiit- 7 .ind *). Nuinlier ~ \- -ho\\ u in 1'i-. 4. The 

 pn-ierior till \. 'pan-mix normal, the microiuiclcii- i- 



dix idin^ not inallx Inn the macnuiiK leu- i- -onn-x\ hat di-toind. 

 .\IIMI!MI M was exidentlx an ex-coiiin^ant \\lu-n o]ierated and 

 dividing t<'i tli. ad time. It \va- killed 24 hour- alter 



dix i-ion; the alui'-rmal ell had one of the lour m-\\ macroinn lei 

 and -exeial ot the d- Mlelit- o| the old Iliacio- 



nucleus ; the other cell was a normal exconju^am I ig. 5. I Mate I 



lioth daughter eell- died \\ithotit regeneration in experi- 

 ment- s. J I and . Nil in I ii i J 1 [sag ..... I \ample o| the- 



Here the cell was cut as shown ii On the following day 



then- \\a- a -mall tentacle-like a]i|)enda^e on the cm -ur! 



i >n tl nd dax the fragment had dixided through the 



original .enter o| tin- . ell into di imilar daughter (ell- me 



of \\hiih \\a- normal in -hap< . luit xxith a collection of Mack 

 granule- at t he anterior end ' : ie other cell \\ a- -mall and a- 



sharply truncated as when cut , On the third day both were 



dead. 



\umliei j< \\a- -imilar in hi-ior\ luit the abnormal fragment 

 loimed li\ dixi-ion of the cut cell was exttemelx' niinute. In in;. 

 little more than a -mall -phere with a micleti- and a contractile 



