RENhKKING RESISTANT STARFISH EGGS NORMAL. 



maturation in a large proportion of eggs, (2 i failure of those eggs 

 which did maturate to develop after fertilization. (3 marked 

 delay in the typical post-maturational cytoly-is of unfertili/ed 

 eggs, and (4) unusual n--i-tance to the cytolytir action of >ah 

 -olutioi:-. \\ere found in more or less < "ii-tam a--oeiation with one 

 another in numer<ui> lot- of ci^-. All nf these pcculiaritie- are 

 e\ideme of ,i certain inertia or rc-i-tance to change in the gg 



ail to react, or react -lowly and imperfectlv 



to condition- \vhich call forth a definite and regular re-pon-c in 

 normal eggs. Tin- fact of their concurrence, as \\ell a- their 

 T.il natui tS that -OUR- -in;Je -tructural or metabolic 



al. normality, \vhe general i-ftect i- to lo\\er reactions ( 1. .cit ie- 

 in the -tern, i- re-pon-iLlr f, , r all of tlu-e peculiarities of 



lieha\ ior. 



The lurther in< idental ol .MTN alion \\a- made in -e\ei'al in- 

 ^tance-. that >uch eggs after treatment for t\vo or three hour- 

 wit h -odium chloride -oluti<.n containing a little ether or chloral 



h\dra'' vered to a considerabl< e the power of develop- 



ing* to a normal larval 'ii fertili/ation: /. < treated 



\ielded more numeioii- ami mote acti\e lar\.e than the un- 

 treated of the -am- \[. fenili/ed at the -ame time. Pure 



-odium ( hloride -olution -ho\\ed i( ^imilar though K- marked 

 action. The siirpri-in^ re-ult thn- ajipeared that treatment \\ith 

 -olution- \\hich are markedly injurioii- to norm.: -na\ lnin^ 



a certain proportion of the-e almormal or "over-ripe" nto 



a condition as te-ard- |>o\\er of de\ i lopnn nt <m fertili/ation 

 clo-ely a]ipfoachin;4 the normal. 



The follouitu icconl will illu-trate the al>o\ c-de-cril -ed condi- 

 tion^ in detail. 



Juno -MJ. njii. 1: ! imiii ;i ialli.- luiiiili' -ii-h 



at tO.OO A M. A lai>;<- pr r.i.iim-.l p, r ui.iiii-iuly 



iimiKitiiii- in -i.i-uatcr tuitli int. ->, hut ahout half un<l'-r\vcnt 



api'.urntly normal maturation. ( >n u-rtili/atinn tat 3:30 P.M v ,.i the 



a n.ii-tiiin of one per cent. lurninl lila-tul.r. nm-t difl in --arly clt-a 

 -. but many failed In cleave or even t< n-iiH-inlnan' 



unli-rtili/e.l inattiu- e.i;v;< after t\venty-l"i>ur hour- in -i\i-uat<r I'-niaiii'-d i^r th< 

 ni"-t part clear aiul tran-lucent with no sign of coagulation; a good many, !. 

 slio\\.-,l appai'-iuly normal coagulation, while other- -Imwed an intei inediat"- 

 con.lition. After forty-eiv:ht hours nian>- unflrtili^e<l mature ex- -till un- 



. Ill.ltecl. 



Al-out two hours after removal from the animals tlie unfertili/ed e.u.u- \>. 



