United States Exploring Expedition, 1838-1842,,, (Continued 4.) 15. Pickering, 4. The geographical distri- bution of animals and plants. Part 1. **G.350.1.18 16. Brackenridge, f¥. D. Botany. Cryptogamia. Text, *#*G.350.1.16; Atlas, **G.Uab.1.57 17. Botany. Uryptogamia, etc. **G550.1.19 (Continued)