Vol. XXL September, ryi i . No. ./. 



BIOLOGICAL BULLETIN 



A STT'DV OF THi: RELATION < >F TISSUE DTFFER- 



ENTIATION TO RATE OF CRnWTll DURING 



HI.' IENERATION. 1 



\V. K. AI.I 1 \. 

 A' K \i.\\ | | .1.1. Nil \ I-. 



Tlii- work was don,- under the directi< >n nf I )r. ("li.i~. /eleny, 

 \\ho-e .idvire .md (Titin-m h.m- lu-eii in\ .ilu.iMe. I .1111 .il-o 

 indeliied to I ! II. I'., \\.ini |. ions .unl ciu-<uii 



mm I . in Mr. S. I . Prince fur ln-lp u ilii the df,i\\ in--. t. Mr. \Y. 

 liuli.iii.i 1 ni\ .1 nihl ystonnt ni.iii-ri.il cllirifin ]\ 



il .md l. the lllin.'i- Si. uc l..il><>r.il"i v .,|" \.uur.il 

 llic ICMII "| \ alu.iMr liicr.iln 



11 ECT. 



The il. inK \\.i~ I., lind \\ hcihcr i he -i (-.iir-i -: 



di regeneration occurs 1- it'in- \- ciin<-itlcin \\itli ilu- 



i|ilcii>n (! ii--ur differentiation. If tin- -.nm- ciin-i-l.iiinii 



- ili.it was imtc'l 1>\ Minn! [908 iii i.rdiii.in. uiM\\ih, \\ ( - 

 c\]'i.t in tiiid di. .\\tli dt.r<,i-iii- .tlu-r ihr 



m.iinr tissues li.i\<- IK-I-II \\rll dc\ eloped .md -till more -'. .ifti-r 

 dillcrcini.ilion i- 'i.ilK 1 1 >iii|>lcic. In the hdp. ECUring 



dftiniir information tin- prr-rni riii'iM li.i- lu-t-n m.idr ID secure 



d.it.i ill lli.it drlinilr line, ti-in^ t u < > di-tinrt I>IH-- for >tndy. 



|-.\n ivi\n \ i 1. A M \ 1 1 KI .\\I\IAI.. 



'I'm (Mi ...... .in ii \\'(>ivM. Lin:nn t }rilns clafxirctlidiins. l\.u/d. 



Mil!, > inl a ml .\!>'!li<x!s. 



The \\ork \\.i- 1't-min in r.irK < >ct ( .ln-r. KJIO. At th.it time 

 then- was not inurh fln.icr of Mi.Urri.il for >urh in\ c-ti-.it ion as .1 



i ..nti ilnitin< iniin : ' . 



the .lin-.-tii.n ..1 Il.-niy li. \\'.u.l. N 



