MATI RATION MI 1111: EOO, AM> not IM 35 



Although tin- roearch. > MI. tin- | henoinona of QQ 

 the egg in animals .still pn-ont numerou 

 U ti/r, >(,/.. 



fijiuM, ,/, tlmt tli>' */'//<// 



| ////// //,. rt ''- fan 



_ards tin- details there arc still nianv pr< >- > 

 to IK- mope carefully studied) // /-/,/ .>,,/// ,,/,/ ////,-/,- ,/. v . // 



fa, ],r,i/ni/>/i/ n-ttl,, 



The ///"/ differentiation of many eggs rich in yolk, which 

 pointed out in the first chapter, may he brought into c;m-,il com,,Ttinn 

 with the plienoiiiena of maturation. Without exception the animal 

 pole is the part of the egg >phere to which the germinative vesicle 

 :ids, jnnl wlu-re th:- polar celK an- >ul.s. .juent lv foi'ined. That 

 the protoplasm is accumulated heie in i^reatei- (plant it v i> in 

 refeiahlo to the fact that it cumes to the surface of the i-^ir alon U ' 

 witli thi* nucleus, which most certainly furnishes a centre o! ;r 

 tiun for the protoplasm. 



The insight into tlie i>licn<aiKMia of tl.o maturation of the egg, a- 

 funiH-ctcdly I'lv-M-ntcd in the preceding pa.irt^, li.is l.f-ii ai'ijuirt-d only l.\ 

 r..unl:ibout ways and alt rr tin- removal of many iniscon.-i-j.ti..' 

 th.- yi-ar \^l-> ITKKIXJK, the <ii>co\ cn-r of tlie L^-nninati . 



t-.uiul tliat in t-^.irs which w,-iv taken from tin- mMuct this \ 

 di>apin-ared. and from this concluded that it was ruptured \\\ tin- coium 

 of the o\iduet, and tliat Ltl a lymphii irenenitrix ) were niin-'l.-c 



tlie L r enn. \Vliencc the name voi.-ula ^ niiinativa. Similar oh>cr\at i>n- 



on this and other olijects l>y t '. !;. \ . I'-AI:I:. OKI.I.A' 111.1: 

 Ki.i-:iM:sr.i-:i:.. KOWAI.KVSK^ . l;i:icu i;i:r. an<l otlu-r>. lUu mi ti..- otlier hand 

 the po.Mthu statements wrr- made for many eggs (>>y Jon. Mn.i.i 



"iicha mirahilis ; by I.i;ii>i<.. QB6KKBAUB, and \AN I'.I.N 

 KoiitVr.-, Me<lu>;e, et.\) that the germinat i\\- \,-i ]._ did imt disappear, but 

 remained and -a\e riM ly diicct divi>ion at the time of si-i:mentation to the 

 daughter-nuclei. 



There were therefore in previous decmnia two oi>j..inir \ one 



ted the continuance of the germinal : .,nd its divi>i.>n during the 



'ne other maintained that the egg-cell in : ait-nt 



I through a condition icithout nuclt-u*, and again acquired a nuclcu^ in 



;''iice of fertilisation. 



c,,nti-..vcr.-ial points I d uj> by I] 



and tlie author had undertaken at tin- HUBfl ' 



I sliowed in my first "BettlUge xur Kennt: :.ddung, Refrucl.- 



und Theilung des thu-risehen .' in all i writings 



had been no distinction made between the nud. 

 mature, and the fertilised egg, but that the>e nuclei 

 ami held to be identical, and I tii>t i-tabli-h,-.i 



native vesicle, i-gg-nueU-us. an-i -:n:cleii>, ihe latti-r being the names 



which were introduced by me. In addition I showtd that the disappearance 



