1.1. The CTFS and the Standardization of Methodology.- 1.2. Design and Purpose of the Large Plot Network.- 2.1. Topography and the Mapping Grid.- 2.2. Censusing Trees.- 2.3. Taxonomy.- 2.4. Checking the Field Work.- 2.5. Recensus.- 2.6. Affiliated Censuses at BCI.- 2.7. Summary and Overview.- 3.1. Data Entry.- 3.2. Constructing a Database for the First Census.- 3.3. Constructing a Database After the Second Census.- 3.4. Data Availability.- 4: Species Distribution Maps from the 50 ha Plot at Barro Colorado Island.- References.