1 INTRODUCTION  
2 OBSERVATIONS  
3 TMC1 DISTANCE  
4 EXTENDED STRUCTURE  
4.1 Column Density Maps  
4.2 Total Mass In The Region  
4.3 Power Spectrum  
4.4 Column Density PDF  
4.5 Cloud Structure  
5 FILAMENTARY STRUCTURE  
5.1 Extracting Filaments  
5.2 Filament Widths  
5.3 Filament Orientation  
5.4 The TMC1 Filament  
6 DENSE CORE CATALOGUE  
6.1 Catalogue Creation  
6.2 Core Properties  
6.3 Prestellar Cores  
6.4 Temperature and Density of Cores  
6.5 Completeness for Prestellar Cores  
6.6 Prestellar Core Mass Function  
7 SUMMARY AND CONCLUSIONS