1131. Porter, T. C. and Coulter, J. M. Synopsis of the Flora of Colorado. U. S. Geol. Survey, Publ. No. 4. Paper covers, 180 pp. Washington, D. C., 1874.$1.25
1132. Pratt, Anne. Flowers and their Associations. 16mo, 228 pp. London, 1846.$1.00
1133. Pulteney, Rich. Historical and Biographical Sketches of the Progress of Botany in England, etc. 2 vols., tree calf, pres. autogr. copy from author, very fine copy. London, 1790.$5.00
1134. Pursh, Frederick. Journal of a Botanical Excursion in the N. E. Part of Pennsylvania and N. York in 1807. 87 pp., very rare. Phila., 1869.$5.00
1135. Pursh, F. Hortus Cantabrigiensis, or, an Accented Catalogue of Plants Indigenous and Exotic Cultivated in the Cambridge Botanic Garden. By James Donn, ninth ed., improved and augmented, etc., by Frederick Pursh, author of Flora of N. America. The N. American Species are designated. Half calf, fine copy. London, 1819.$1.75
1137. Rafinesque, C. S. The School of Flora. As Published in the Casket, serially, 1828, 1830, 1831, 1832. Excerpts, illus. with woodcuts, very scarce. Phila., 1828-32.$6.00
1138. (Randolph, A. D. F.) Leaf and Flower Pictures and How to Make Them. Small 4to., 58 pp., colored plates, cuts. N. York, 1857.$2.00
1139. Raspail, F. V. Nouveau Systeme de Physiologie Vegetale et de Botanique. Atlas. 60 plates, 91 pp., descriptive text, half calf, stain on lower corners of plates. Paris, 1837.$1.25
1140. Rattan, Volney. Popular California Flora of Plants of Central California and Westward to the Ocean. 4to, third ed., enlarged. Illus. San Francisco, 1882.$1.25
1141. Ray, John. Synopsis Methodica Stirpium Britannicarum, Etc. Ed., odd vol., 288 pp., fine plates. Londini, 1724.$2.00