The Cytoplasmic Inclusions of the Germ-Cells.! 
Part IX. On the Origin of the Golgi Apparatus 
on the Middle-piece of the Ripe Sperm of Cavia, 
and the Development of the Acrosome. 
By 
J. Bronté Gatenby, B.A., B.Se., D.Phil. (Oxon.), 
Lecturer in Cytology, University College, London, and Senior Demy, 
Magdalen College, Oxford ; 
AND 
J. H. Woodger, B.Se. (Lond.), 
Assistant in Zoology and Comparative Anatomy, University College, 
London. 
With Plates 11 and 12 and 2 Text-figures. 
CONTENTS. 
1. INTRODUCTION 
2. PartI. The Derelowment ai the ibenenive Middle. -piece Golgi 
Apparatus 
3. Part It. Literature 
4, Technique 
5) 
5. GENERAL DESCRIPTION OF THE Bi AVIOUR OF THE fit enrerand 
OF THE CYTOPLASM IN CAVIA SPERMATOGENESIS . 
6. Pertop I. The Growing Spermatocyte . 
7. Pertop IT, Maturation Divisions 
8. Pertop III. The newly-formed Spermatid 
9 
. ON THE SUBSEQUENT BEHAVIOUR OF THE GOLGI APPAR ARUE 
AND ARCHOPLASM 5 
10. THe CASE OF THE Rat apraminenaes : 
11. Discussion. 
(a) On the Origin of the Acrosome in Animal Spermatogenesis 
(6) The Middle-piece of the Spermatozoon after Entry into 
the Egg . 
12. SUMMARY 
13. BIBLIOGRAPHY 
14. DescrietTion oF PLatEs 1] AND 2 
PAGE 
266 
1 Part of the materials used for this research was provided by a Govein- 
ment Grant of the Royal Society, for which thanks are expressed. 
