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. 
