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Contents: Stated Meetings: May 15th, June 19th, July 17th, Aug. 21st, Sept. 18th, Oct. 2d, Oct. 16th, Nov. 6th, Nov. 20th, Dec. 4th, Dec. 18th, 1874; Jupiter-Cyclical Rainfall, by Pliny Earle Chase; Cyclical Rainfall at Barbadoes, by Pliny Earle Chase; Reply to Dr. T. Sterry Hunt, by F.A. Genth; Contributions from the Lab. of the U. of Pennsylvania. No. II. On an Improvement of the Burette Valve, by Geo. A. Koenig; No. III. On American Tellurium and Bismuth Minerals, by F.A. Genth; On Resources, Productions and Social Condition of Egypt, by Alexander Delmar; List of the N. Am. Platypterices, Attaci, Hemileucini, Ceratocampadae, Lachneides, Teredines and Hepiali, with Notes, by Aug. R. Grote; Results of an Examination of an Exploded Locomotive Boiler, and of Experiments to Ascertain the Causes of Explosion, by Charles M. Cresson; An Obituary Notice of Chief Justice John Meredith Read, by Eli K. Price; On the Alleged Parallelism of Coal Beds, by John J. Stevenson; On Exfoliation of Rocks near Gettysburg, by P. Frazer, Jr.; Pah-Ute Cremation, by W. J. Hoffman. Illus.
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