19 



but one of the conditions of the gift is that it shall be arranged 

 separately according to the Lamarckian system of classification, 

 as an historical record of that system. The Crooke Collection 

 of Land and Fresh Water Shells, donated by John J. Crooke, of 

 Staten Island, is also extremely valuable and extensive, and will 

 add very largely to our collections, although not composed of 

 showy specimens. In the four genera, Helix, Cylindrella, Partula 

 and Succinea, for instance, it will add 478 species. The entire 

 land shells of the Jay Collection numbers 1600 species, the Crooke 

 Collection 2300 ; but the proportion of added species is much 

 above this difference, as many in the Jay are not represented in 

 the Crooke Collection. 



Accessions to the Geological Department. 



BY DONATION. 



GEO. ASHMAN, New York City. 



Eight specimens of Lower Helderberg Limestone, carrying Leper- 

 ditia and Beyrichia, from Chepachet, Herkimer Co., N. Y. 

 H. BOOTH, Poughkeepsie, N. Y. 



One hundred specimens of Copal, inclosing insects ; cut and polished ; 

 principally from Zanzibar, Africa. 

 BOOTH, GARRETT & BLAIR, Philadelphia, Pa. 



A small collection of fossils comprising representatives from Europe 

 and America, and formerly the property of Prof. Booth, of Phila- 

 delphia, Pa. 

 One set of Dr. Jacob Green's models of the originals of Trilobites 

 described in his Monograph of the Trilobites of North America. 

 J. E. COE, New York City. 



Fossil Gasteropods from the coal shale at Danville, 111., and specimens 

 of fossils from the Hudson River Group, Wilmington, Will Co. , 111. 

 E. CUDLICH, Stockton, Pa. 



Core of Boring, by diamond drill, through coarse sandstone of the Coal 

 Measures at Stockton, Pa. 

 SUMNER T. DURHAM, New York City. 



Vertebrate fossil remains, from the Marl Pits at Malvern Hills, Virginia. 

 WM. DUTCHER, New York City. 



Specimen of Chemung Sandstone with fossils, from Stamford, Delaware 

 Co., N. Y. 



Prof. W. B. DWIGHT, Poughkeepsie, N. Y. 



Twenty-one specimens of Primordial Fossils, from the Potsdam sand- 

 stone, shale, and limestone at Stissing Mt., and at Schodack 

 Landing, N. Y. 



J. HADDAEUS, Sing Sing, N. Y. 



A number of specimens of detached bones, teeth, etc., with phosphatic 

 nodules, from the mines near St. Projet, Caylus, France. 

 A. H. JOCELYN, N. Y., and O. C. BROWNELL, Tionesta, Pa. 



Specimen of Stigmaria in oil-bearing sandstone, Tionesta Creek, 

 Alleghany River, Forest Co., Pa. 

 J. S. McLAURY, Yonkers, N. Y. 



One Septaria, Onondaga Co., N. Y. 



