3. Amazon Basin.

Material has been studied during the last years from two Indian tribes: Emerilhon north of the Amazon in the Territory of Amapa, and Caraja south of the Amazon in the State of Para. Since the latter is growing very well in Piracicaba, a detailed study will be possible. The material received was highly heterogeneous and heterozygous, with flint and soft kernels, in general of small size, straight or interlocked rows and many other interesting characters, which shall be reported later in more detail.