166 



INDEX TO VOL. III. 



Page 

 W. H. Dall. 



Notes on the Museums and Zoological Gardens of Northern 



Europe. .......... 19 



Notes on the Museums and Zoological Gardens of Northern 



Europe, (concluded) 21 



On the Muscles of the Oyster 86 



On the Deep-Sea Dredgings in the Gulf of Mexico and the 



West Indies in 1873-78 45 



On some recent Observations on Molluscs .... 75 



On the Boundary Line between Alaska and British America 77 



M. H. DOOLITTLE. 



On a Pile of Balls . . . . . . . . . 76 



Kemarks on the Gold and Silver Question .... 103 



Kemarks on the Supply of Gold and Silver . . . . 112 



Eev. J. O. Dorset, (of Washington, D. C.) 



On the Gentile System of the Omahas . . , . . 128 



P. H. Dudley, 0. E., (of New York City.) 



On the Construction and Uses of Dudley's Dynagraph . 29 



0. E. DUTTON. 



On the Geological Character of the Colorado Kiver , . 28 



On the Succession of Volcanic Eruptions .... 36 



On the Succession of Volcanic Eruptions (concluded) . . 87 



On the Permian Formation of North America ... 67 



On the Silver Question 78 



•J. E. Eastman. 



Exhibition of a Personal Equation Instrument ... 33 



On a Personal Equation Apparatus ..... 37 

 Some Eesults of the Observations of the Transit of Mercury 



of 1878, May 6th 43 



E. B. Elliott. 



On the Progress of International Coinage in Fmnce and 



America .......... 27 



On International Coinage ....... 38 



On Large Area Illumination by Electricity .... 45 



Eemarks on the Eelative Value of Gold and Silver . . 108 



Eemarks on Mono-metallism and Bi-metallism . . . 107 



On the Construction of the Government Sinking Fund . 113 



