State Museum of Natural History, 35 



By Exchange. 



Charles Wachsmuth, Burlington, Iowa : 

 Ten specimens of Crinoids from the Kinderhook Group of Marshall 

 county, Iowa. 



Charles K. Keyes, Burlington, Iowa : 

 One hundred and twenty-two specimens of Crinoids. , 



F. M. Fultz, Burlington, Iowa : 

 One hundred and twenty-five specimens of Crinoids, etc. 



Prof. Daniel Oehlert, Mus. d'Hist. Nat., Laval, Dep't., Mayenne, 

 France : 



A collection of fossils, about, 500 specimens, and 251 species from 

 the cretaceous and Jurassic formations of France. 



By PlTECHASE. 



T. M. Stoughton, Turner's Falls, Mass. : 

 One slab of sandstone (5'x2'), with two footprints. 

 One slab of sandstone (4'x2'), with mud cracks and two footprints. 

 One slab, cast of above (4'x2'.) 



One slab of sandstone (3 J'x2'), with ripple-marks and small footprints. 

 One slab of sandstone (2' 9"xl' 6"), with rain-drop impressions and 



small tracks. 

 One slab of sandstone (1' 4"xl'), with ripple-marks and one footprint. 

 One slab of sandstone (15"x8"); one (9"x5|"), and one (5|"x4") with 



structural markings. 

 John M. Clarke, Albany, N. Y. : 

 Two hundred and twenty-six specimens of trilobites, from the Scho- 

 harie Grit and Lower Helderberg Limestones of Albany county, 



N. Y., and Square Lake, Maine. 

 One hundred and thirty-six specimens of trilobites and cirripedes, 



from the Corniferous Limestone of Ontario county, N. Y. 

 Nine hundred and twenty-four specimens of trilobites, phyllocarida 



phyllopoda and cirripedes, from the Hamilton group, various 



localities in Ontario county, N. Y. 

 One hundred and eleven specimens of phyllocarida from the Portage 



and Chemung groups, Ontario, Yates and Livingston counties, 



N. Y. 

 Twelve specimens, used for illustration of a paper on the structure of 



the trilohite eye (Journal of Morphology, 1888, by John M. Clarke. 

 Thirty-seven specimens of denticles (annelid), used for illustration of 



a paper on " Annelid teeth," 1887. 

 Fifteen specimens of brachiopoda, from Corniferous and Hamilton 



groups, of New York. 



