Do7iations for 1886-88. 



Second Geological Survey of Pennsylvania, vols. 1-72. 



" " Grand Atlas, " part 1-6. 



Ed. HauselL and /. Btrkner — Gustav Seiffarth eine Biograpliische vSkizze. 



*' " " — The Literary Life of Gustav Seiffarth. 



Ferd. von Miiller — A Census of the Plants of New South Wales. 

 G. voin Rath — Vortrage und Miltheilungen. 

 Third Annual Report of the U. S. Ch'il Service Commission. 

 British A. A. S. Montreal Mectimr, 18S4. 

 R. Rogers — A new Philo'^ophy of the Sun. (6 copies.) 

 Gjistav Hinrichs — Report of the Iowa Weather Service, 18S3 

 H. Abbott — Yucca angustifolia. 



Observations of the International Polar Expedition, 1882-83. 

 G. G. Shumard— Geology of Western Texas. 



C. V. Riley — Report of the EntcMnologist for the year 1S85. 



" The Mulberry Silk-worm. 



5. M. Tracy — Catalogue of Pha;nogamous Plants. 

 T. Dufy—Wave Motor. 

 £>r. E. Sanders — Der Deutsche Pionir, Band 16, Heft 9. 



D. G. Brinton — Ikonomatic ^Vriting. 

 Robert Bell — The Forests of Canada. 



" Mineral Resources of the Hudson Bay. 



Annual Report of the Observatory of Tale College. 

 David P. Todd — Trans-Neptunian I'lanet. 



" Speculative and Practical Search for Neptunian Planet. 



*' The Lick Observatory. 



Moore and Baier — Kutters' Formula for Sewers. 

 H. Abbott — Analysis of the Bark of I'ouquieria. 

 Robert Moore — A Map of the City of .Si. Louis. 



Report of the Fish and Game Commission of Massachusetts for 1886. 

 D. G. Brinton — The Phonetic Elements in the System of Mayas and 



Mexicans. 

 Proceedings oi American Phartnaceutical Association, vol. 34. 

 Edwin Harrison — Proceedings A. A. A. S., vol. 35, 1886. 

 History and Work of the Warner Observatory., Rochester, N. Y., vol. i, 



1883-86. 

 A. R. Turner — Report of the Flax and Hemp Spinners' Assoc'n. 

 Wfti. Trelease — i6th Ann Rep. of Michigan State Horticultural Soc'y. 

 I St Ann. Rep. of the Photographic Stellar Spectra Harvard College, 

 yos. Moder — Denkschrift iiber die Zehntheilige Uhr. 

 Asa Gray — Botanical Contributions, 18S7. 

 J. A. Seddon — Stages of the Missouri River. 

 G. vom Rath — Friedrich Ptaff. 



" Einige geologische ^\'ahrnehmungen in Mexico. 



" Ueber kiinstliche Silberkrystalle. 



Samuel Lockvjood — Raising Diatoms in Laboratory. 

 Tefith Census of the United States, vols. 1-19. 

 Twenty-ninth Annual Report of the Brooklyn Library. 

 Dr. F. Exner — Bernerkungen zur taglichcn Oscillation des Barometers. 

 U. S. Consuls' Reports on Forestry in Europe. 

 Maverick National Batik Manual. 

 U. S. Consuls' Reports, No. 75-94. 



15 



