2. _The brown ware_, or that which shows an admixture of mica. This, although uniformly without color decorations, is occasionally marked with impressed figures and lines. Although inferior in quality, being coarse and fragile, it presents more symmetrical though less varied forms than are usually found in the preceding group. The influence of contact with the European races is here very apparent, as, for example, in the true pitcher and other common utensils and an apparent attempt at glazing. 3. _The black ware_ which is without ornamentation. This variety in quality and character is precisely like the polished red of the first group; but is slightly in advance of that in regard to finish, and perhaps, as heretofore remarked, may be classed as lustrous, while the red may be classed as semi-lustrous. The paste of which this black ware is formed appears to have been better prepared than that of the preceding varieties, and is the hardest and firmest in the collection. 4. _The cream-white pottery decorated in colors_. This extensive group, which includes fully two-thirds of the entire collection, embraces almost every known form of earthenware manufactured by the tribes from whom it was obtained. The paste of which it is formed is similar in character to that of the black ware. When broken the fracture shows very distinctly the effect of burning, the interior being of the natural leaden color, shading off to a dull grayish white as it approaches the outer surface. The opaque or creamy-white color of the surface is produced by a coating of opaque whitewash. Upon this white surface the figures are afterwards drawn. The only colors used in decorating pottery are black, red, and some shade of brown. But of this we will speak more fully when we come to describe the peculiar methods practiced by the different tribes in making and adorning pottery. Although there is a strong general similarity in this colored ornamentation, the great variety of details renders it difficult to classify the figures so as to convey a correct idea of them to the reader. We shall therefore have to refer him to the numerous cuts and the colored plates which have been introduced for the purpose of illustrating the catalogue. The following general statement is about all that can be said in reference to them before descending to specific details.