METHOD OF CELL-DIVISION IN THE SEX CELLS OF 
TAENIA TENIAEFORMIS.! 
MARY T. HARMAN 
Kansas State Agricultural College, Manhattan, Kansas 
EIGHT PLATES 
CONTENTS 
CTD Das PROP pie ts RAR I TER Ie TOR Gib ec dood i a 205 
NV ieatrerstet est ane iO Si5/) ) Mamet to eis eear Ce coe eties oI aic. lorshtin =f ekiw one Sew ero EE 209 
Hep bie erm avenlal amen... mabe: cose lasts PAS, Coe Calais d due cs wat uae 209 
“TDS ERNE oi | Pees ea PE a on aes ae ne re 210 
Whecrvcii ONS meen eens a>.) Wem Prunes. une Meg eT ck sy pa es ae ced Cs ee 212 
1. Spermatogonial divisions and spermatogenesis.................. ate 212 
OC LAI SV AGLONS 7,5. Wester Ge tucls ce Poke Sralees a ccm Thu ch satel cans no owe 213 
Bey hapsle ANG the PTOWLMPeTIOd.5 0. ou acs ccs ica s aa weed babes die coke dees PA 
Previn ubatlonrang fertilization: 1... sn. .4 sede de asad dead. tadaee Mes aee 214 
Ih. (GHIGENGOIRSS 2 35 a eae peer, ol Se esse: ORT RIEe RTE isiceAtc o  e 215 
gee HaAraeLer Gite; ClEAV ARG. ace 2 lf oisicliye Scie sie nvin bau wue eee Hewden 215 
pe lenech-and: position of the spindle: .2.% 66... S05... ens. soc ee whe: 216 
CHelecolstruction: Of tae MU@cleuss 45 ta siddn sk annonce dae cawiateee eres 217 
d. Condition of the chromatin in the nucleus........................ 219 
Se aa OITA AD OA OVE OTLOZIE G2. ai 6 tsa tice ulciaan $2 vt eldied «dnc dv cwiv ale esteog hs siave done 221 
LL UE TS SET te RI a ARE dar PRE ee oa 223 
AT SEPT BR Perea, WING, oyhere ahd Sh Setersce RG Ck ak hs wh eb Lah eee wie bd we 225 
INTRODUCTION 
Flemming (’92) in his review of the literature on amitosis from 
1841 to the beginning of 1893, concludes that investigation has 
shown that amitosis is connected with a high specialization of 
the cell and may be a forerunner of degeneration. This is in 
harmony with the views of Ziegler and Vom Rath, that those 
1 Contribution from the Zoological Laboratory, Indiana University, no. 129. 
Offered as partial fulfillment of the requirements for the degree of Doctor of 
Philosophy. 
205 
JOURNAL OF MORPHOLOGY, VOL. 24, NO. 2 
