AUTHOR’S ABSTRACT OF THIS PAPER ISSUED 
BY THE BIBLIOGRAPHIC SERVICE, JANUARY 16 
CYTOLOGY OF THE LARGE NERVE CELLS OF THE 
CRAYFISH (CAMBARUS) 
L. S. ROSS 
Hull Laboratory of Anatomy, University of Chicago 
FIVE PLATES (TWENTY-ONE FIGURES) 
CONTENTS 
i Grav iawoxs hb YGi ROLE eects lL aan A a hie Sen See a Sa airs ee Cana Terese DUN A$ NR 37 
NMEaterialean chine tiOd st prtk ace ethan cele ese nce oe eee ore ee ae 39 
DANSE BDU a eae Se ae cth eta © Undo hid MERRED Ants RAPP T ELLA aOR Rane rs ee Ge tle 41 
Olssenyatlon span dediscUssiOMey ator coeeree cette ete yack iy i ee eit 44 
intcracellulareaxone and) neuronbrillacey...6 secede .s cen eee eee eo. 44 
INHSSIESUDStATHC Cr err ray ate rete en Ree 2 A RS ENE ee ta ARNG a eae N 51 
Galguimbernal reticular apparatus: -h 2.06) seeds Mee We eh ee 53 
ROM OS DOMAIN mi oe deta 5) on cisisier’ of adgaiaerd > avela cies te ko erter sacah da Septal newark Seles 56 
Ja Cri eyGrcel ania a TET Ace ee as aa Nee rn ee a Ev a ais AS as 57 
SOUT ETS poht Ye, Ba. bes 1.08 Carat A SE gn AN Net Peete Sy Bt ee 58 
MEGS TAL UTE IL CCL pasar. fice Neh os Paterna rere eo ahs SRA Se oe time tiat St tt BU 58 
INTRODUCTION 
Since the discovery of mitotic cell division histologists have 
given much more attention to the nucleus of the cell than to the 
cytoplasm. This was due in part, and perhaps principally, to 
the search after the bearer of heredity resulting in the belief 
that the chromatin is such a bearer. For some time the cyto- 
plasm was more or less neglected, but of recent years it has re- 
ceived more attention, some cytologists insisting that in some 
degree, at least, it shares with the nuclear material in functioning 
as a transmitter of heritable characters. Even though this 
function be denied it, yet its importance is realized because of 
its relationship to the nuclear material as its immediate environ- 
ment, and of the interactions between them. ‘The complexity 
of the structure of the cytoplasm is manifest as a result of studies 
Norr.—I gratefully acknowledge indebtedness to Prof. R. R. Bensley, Prof. C. 
Judson Herrick, and Prof. G. W. Bartelmez for kindly criticism and valuable 
suggestion. 
37 
THE JOURNAL OF COMPARATIVE NEUROLOGY, VOL. 34, No. 1 
