^^^ IBept. 6, 



(Catalogue^ Parts i-iv); Prof. M. H. Boy^, Coopersburg, Pa. 

 ( 142) ; Lackawanna Institute of History and Science, Scrantou, 

 Pa. (144); Prof. Daniel Kirkwood, Riverside, Cal. (14(5); 

 Ohio State Arch geological and Historical Society, Columbus 

 (143, 146) ; Prof. G. W. Hough, Evanston, 111. (142); Museo 

 de la Plata, La Plata. Argentine Eepublic (145, and Catalogue^ 

 Parts iv) ; Istituto Fiseco-Geographico Nacional, San Jose de 

 Cofta Rica, C. A. (142, 144, 145). 



Letters of acknowledgment (147) were received from the 

 Franklin Institute, Historical Society of Pennsylvania, 

 Numismatic and Antiquarian Society, Library Company of 

 Philadelphia, Academy of Natural Sciences, Wagner Free In- 

 stitute of Science, Free Library of Philadelphia, Profs. John 

 Ashhurst, Jr., John H. Brinton, F. A. Genth, Jr., Lewis M. 

 Haupt, H. V. Hilprecht, J. P. Lesley, Drs. Morris Longstreth, 

 Charles A. Oliver, C. N. Peirce, Charles Schaffer, H. Clay 

 Trumbull, Messrs. R. L. Ashhurst, Cadwalader Biddle, Arthur 

 E. Brown, Charles Bullock, Joel Cook, Patterson Du Bois, 

 Jacob E. Eckfeldt, Robert Patterson Field, Benjamin Smith 

 Lyman, James T. Mitchell, Franklin Piatt, J. Sergeant Price, 

 Theo. D. Rand, J. G. Rosengarten, Julius F. Sachse, L. A. 

 Scott, Coleman Sellers, F. D. Stone, Mayer Sulzberger, L. 

 Vossion, Samuel Wagner, Joseph Wharton, Talcott Williams, 

 Mrs. Helen Abbott Michael, Philadelphia ; Prof. John F. 

 Carll, Pleasantville, Pa ; Mr. Heber S. Thompson, Pottsville, 

 Pa.; Rev. F. A. Muhlenberg, Reading, Pa.; Lackawanna In- 

 stitute of History and Science, Scranton, Pa.; Mr. Thomas S. 

 Blair, Tyrone, Pa; Dr. John Curwen, Warren, Pa.; Philo- 

 sophical Society, Hon. William Butler, Prof. J. T. Ruthrock, 

 Mr. Philip P. Sharpies, West Chester, Pa.; Col. Henry A. 

 DuPont, Montchanen, Del.; U. S. Naval Institute, Annapolis, 

 Md.; Maryland Institute lor the Promotion of the Mechanic 

 Arts, Enoch Pratt Free Library, Baltimore, Md.; U. S. Coast 

 and Geodetic Survey, U. S. Geological Survey, Prof. S. F. 

 Emmons, Dr. W. J. Hoffman, Profs. C. V. Riley, Charles A. 

 Schott, Washington, D. C ; ISlr. Jedediah Ilotchkiss, Staunton, 

 Va.; Prof. J. W. Mallet, University of Virginia, Va.; Prof. I. 



