150 Presents. [June 18, 



Observations and Reports (continued}. 



Pennsylvania: Geological Survey. Dictionary of Fossils. Yol. 

 II-III. 8vo. Harrisburg 1889-90; Seventh Report on the 

 Oil and Gas Fields of Western Pennsylvania. 8vo. Harris- 

 burg 1890 ; Atlas, Southern Anthracite Field. Part 3. 1889. 



The Survey. 



Potsdam : Die Koniglichen Observatorien fur Astrophysik, Me- 

 teorologie und Geodasie ; aus Amtlichem Anlass herausg. von 

 den betheiligten Directoren. 8vo. Berlin 1890. 



The Government of Germany, through H.M. Treasury. 



Pulkowa. Nicolai-Hauptsternwarte. Catalog von 5634 Sternen 



fur die Epoche 1875.0. Folio. St. Petersbourg 1891 ; Stern- 



Ephemeriden auf das Jabr 1891. 8vo. St. Petersbourg; 



Bericht. 1887-89. 8vo. St. Petersbourg 1890. 



The Observatory. 



San Francisco : California State Mining Bureau. Tenth Annual 

 Report. 1890. With Maps. 8vo. Sacramento. 



The Bureau. 



Stockholm : Sveriges Geologiska Undersokning. Ser. Aa. Kart- 

 blad med beskrifningar. Nos. 84, 100, 103-107. 8vo. 

 Stockholm 1889 ; Ser. Bb. Specialkartor med beskrifningar. 

 Nos. 4, 6. 4to and 8vo. Stockholm 1889-90 ; Ser. C. Af- 

 handlingar och uppsarser. Nos. 92-111, 113-115. 8vo and 

 4to. Stockholm 1889-90; Om apatitens forekomstsatt i Norr- 

 bottens Ian jemfordt med dess upptradande i Norge. G. 

 Lof strand. 8vo. Stockholm 1890. The Survey. 



Sydney: Observatory. Meteorological Observations. 1865-1877. 

 8vo. Sydney. The Observatory. 



Washington: U.S. Department of Agriculture. Fifth Report. 

 8vo. Washington 1890. The Department. 



U.S. Fish Commission. Bulletin. Vol. VIII. 8vo. Washing- 

 ton 1890. The Commission. 

 U.S. Naval Observatory. Observations. 1885. 4to. Washing- 

 ton 1891. The Observatory. 

 U.S. Patent Office. Official Gazette. January to June, 1891. 

 8vo. Washington. The Office. 



Journals. 



American Chemical Journal. Vol. XIII. Nos. 1-5. 8vo. Balti- 

 more 1891. The Editor. 



American Journal of Mathematics. Vol. XIII. Nos. 2-3. 4to. 



Baltimore 1891. The Editors. 



American Journal of Philology. Vol. XII. No. 1. 8vo. Balti- 

 more 1891. The Editor. 



