VIII 



Contents 



107 



Investigation of High Resolution Electron DitTrac- 

 tion Patterns from Individual Micro-Crystals by 

 Using a Three-Stage Electron Microscope. 98 



W. D. RiECKE 



An Electron Microscope Examination of Freshly 

 Prepared Silver loide Sols. 



R. Ottewill and R. W. Horne 



Y. SPECIMEN PREPARATION TECHNIQUES IN 

 BIOLOGY AND MEDICINE 



Problems of Osmium Fixation. 106 



G. F. Bahr, G. Bloom and U. Friberg 

 The Quantitative Assay of Lipids Extracted from 

 Untreated and OsOj-fixed Beef Brain. 



G. F. Bahr 

 The Fixation of Nuclei in Locust Testis. 108 



I. R. Gibbons and J. R. G. Bradfield 



Ultra-thin Sections of Avian Tubercle Bacilli in a 

 New Embedding Medium. HI 



A. M. Glauert and E. M. Brieger 



The Use of Gelatin for Embedding Biological Ob- 

 jects in Preparation of Ultrathin Sections for Elec- 

 tron Microscopy. 



V. P. GiLiiv 

 On the Preparation of Ultrathin Serial Sections by 

 Means of a Watchmaker's Lathe. 



W. NiKLOWITZ 



How to Prepare Ultrathin Sections of Tissue Cul- 

 tures. 



V. DOSTAL 



Eine einfache Vorrichtung zum Anspitzen von 

 plexiglaseingebetteten Objekten. 1 1 8 



A. Maas 

 An Improved Method to Prepare Formvar Nets for 

 Mounting Thin Sections for Electron Microscopy. 120 



F. S. Sjostrand 



Experiments on Staining Thin-Sections for Electron 



1 ''1 

 Microscopy. 



I. R. Gibbons and J. R. G. Bradfield 



Die Eignung und Anwendung von Phosphor- 

 wolframsaure und Thalliumnitrat als Kontrastmittel 

 zur Darstellung cytoplasmatischer Strukturen. 124 



K. E. Wohlfarth-Bottermann 



The Use of the Electron Microscope to Control 

 Preparation of Cellular Constituents. 125 



M. S. C. BiRBECK and E. H. Mercher 



A Micro-manipulation Method for the Preparation 

 of Calibrated Microdroplets over the Range 10-'=- 

 10-1" ml in Electron Microscopy. 127 



Irene Sugar 



ijber die quantitative Spreitung von Zellen. Eine 

 Untersuchung dunnster Filme mit dem Elektronen- 

 mikroskop. 12° 



A. Kleinschmidt 



113 



115 



117 



The Effect of Acridine Type Dyes on the Submicro- 

 scopical Structure of Large Molecules. 131 



F. GuBA, G. Hajossi-Kerek and G. Romhanyi 



VI. CELL ULTRASTRUCTURE, GENERAL 



Mitochondria 



Elektronenmikroskopische Studien an Leberschnit- 

 ten von Thyroxin-behandelten Ratten. 134 



H. ScHULZ, H. Low, L. Ernster und F. S. Sjo- 

 strand 

 Die Entstehung, die Vermehrung und die Abschei- 

 dung geformter Sekrete der Mitochondrien von 



137 

 Paramecium. 



K. E. Wohlfarth-Bottermann 



Golgi Apparatus 



Changes in the Ultrastructure of the Ciliary Epi- 

 thelium during Inhibition of the Secretion of 



1 39 

 Aqueous Humour. 



A. HOLMBERG 



L'appareil de Golgi des protozoaires et son ultra- 

 structure comparee a celle des metazoaires. 143 



P. -P. Grasse 

 The Morphology of the Golgi Apparatus in Neu- 

 rones and Epithelial Cells of the Common 

 Limpet Patella vulgata. 1^^ 



D. Lacy 



Cytoplasmic Basophilia 



Basophilic Structures in the Cytoplasm of the Sea 

 Urchin Egg. 

 B. A. Afzelius 



147 



150 



151 



Plasma Membrane 



Functional Changes of the Free Cell Surface Mem- 

 brane of the Intestinal Absorbing Cell. 

 F. S. Sjostrand and H. Zetterqvist 



The Hepatic Sinusoidal Endothelial Cell and Its 

 Histological Relationships. 



H. F. Parks 

 Observations on Early Stages of Phagocytosis of 

 Collodial Particles by Hepatic Phagocytes of the 

 Mouse. 



H. F. Parks and A. D. Chiquoine 



The Role of Cell Membranes in Morphogenesis. 156 



M. S. C. BiRBECK AND E. H. Mercer 

 Electron Microscopic, X-Ray, and Birefringence 

 Studies on the Proteins of the Hair Follicle. 



M. S. C. BiRBECK AND E. H. Mercer 

 The Mechanism of Hemolysis Caused by Ultra- 

 sonic Irradiation I. 



W. ROMANOWSKI, A. FeLTYNOWSKI AND J. LlTWIN 



The Mechanism of Hemolysis Caused by Ultra- 

 sonic Irradiation II. 



W. ROMANOWSKI AND A. FELTYNOWSKI 



158 



161 



