METHOD OF CELL DIVISION IN MONIEZIA. 28 1 



attempt to control conditions in that material there will always 

 be room for endless discussion and controversy. It seems to me 

 highly improbable that cytology will make any very great real 

 advances in thi- direction. But when cytolo^i-t- -hall -eriously 

 dt vote their energies to the problem of the physiology of the cell, 

 a field of inve-ti.LMtion that ha- been entered only here and there, 

 and to the control of cellular phenomena, then I believe we shall 

 n-al pi . together with the <:on-i-nment to oblivion of 



-oine ot the hypothe-e- now nio-t fondly cheri-hed. 



A- regards Mnniczin, however. I have at p re-em nothing to 

 :it further observations, or rather my own interpre- 

 tation ot \\hat 1 h.: 'i in Richard-'- material a- a^ain-t his 

 interpret. iiion of uhal he ha- -ecu. li. -\.nid the prr-ent paper 

 I do not propo-r to enter into .my further con-ideration of the 

 problem of ainiio-i- until I .an d<> so "ii a different ba-i-. as 



[ hope to be able to do ue time in the future. 



Tim- far I ha\e .,nly attempted to defend mv own observa- 

 tions and i "in lii-ion-, .i-.iin-t uh -:ied to me unmerited 

 ci-iii<i-m and -.kepiici-m ba-ed on in-ullicient <la!a. Richard-'- 

 paper i.n Moni( :i<i i-, hov. d n-in\ e-t i^at ion of the Mib- 

 and as MI. h I e.m "til\ \\elcoine it and accord it the coii- 

 -ider.itioii \\ Inch i- due to .my piece of -, i.-n title \\ork. alt hou^h 

 I am eom|elled to Criticize it in \arioti- point-. The pre-ent 

 pa|ei include- a -tatemeiit of the re-ult- of my observations on 

 Richard-'- -lide her with some di-cu i<>n of hi- argument- 

 and coiiclu-ioii- an 1 ! to critici-m- olfen-d b\- other 

 authors and to tin- \ alidit\ of rytolo-ieal theor\ . 



The .-lide- contain exactlv the -aim- picture- a- my own. 

 Tin re i- no i|iie-tion In - of fixation or of -t. lining. 



It amito-i- OCCUrs in m\ malerial then it OCCUrs in Richard-'s 

 in the -ame region- of the body and the -am. - "t develop- 



ment. 



I. Tin I'KiMi'kiuv OF mi-: OVARIES AND DICTS. 



I igs. i x are > imei : drawing- from the primordia of the 



oxarie- in Richard-'- -lide-. The\- were drawn from -everal 



slide- \\ith different method- of fixation and -taining. In the 



ires 1 have attempted to reproduce what I have seen as 



